Nuclear Watch New Mexico

Through comprehensive research, public education and effective citizen action, Nuclear Watch New Mexico seeks to promote safety and environmental protection at regional nuclear facilities; mission diversification away from nuclear weapons programs; greater accountability and cleanup in the nation-wide nuclear weapons complex; and consistent U.S. leadership toward a world free of nuclear weapons.

“The threat of nuclear war has dangled over humankind for much too long. We have survived so far through luck and brinkmanship. But the old, limited safeguards that kept the Cold War cold are long gone. Nuclear powers are getting more numerous and less cautious. We’ve condemned another generation to live on a planet that is one grave act of hubris or human error away from destruction without demanding any action from our leaders. That must change...

Over the past several months, I’ve been asked, including by colleagues, why I want to raise awareness on nuclear arms control when the world faces so many other challenges — climate change, rising authoritarianism and economic inequality, as well as the ongoing wars in Ukraine and the Middle East.

Part of the answer is that both of those active conflicts would be far more catastrophic if nuclear weapons were introduced into them...The other answer lies in our recent history. When people around the world in the 1960s, ’70s, ’80s and early ’90s began to understand the nuclear peril of that era, a vocal constituency demanded — and achieved — change.

QUOTE OF THE WEEK

It seems we can’t find what you’re looking for. Perhaps searching can help.

LANL’s Central Mission: Los Alamos Lab officials have recently claimed that LANL has moved away from primarily nuclear weapons to “national security”, but what truly remains as the Labs central mission? Here’s the answer from one of its own documents:

LANL’s “Central Mission”- Presented at: RPI Nuclear Data 2011 Symposium for Criticality Safety and Reactor Applications (PDF) 4/27/11

Banner displaying “Nuclear Weapons Are Now Illegal” at the entrance in front of the Los Alamos National Lab to celebrate the Entry Into Force of the Nuclear Weapon Ban Treaty on January 22, 2021

It seems we can’t find what you’re looking for. Perhaps searching can help.

Follow the Money!

Map of “Nuclear New Mexico”

In 1985, US President Ronald Reagan and Russian President Mikhail Gorbachev declared that “a nuclear war cannot be won and must never be fought.”

President Ronald Reagan and Soviet General Secretary Mikhail Gorbachev shake hands after signing the arms control agreement banning the use of intermediate-range nuclear missles, the Intermediate Nuclear Forces Reduction Treaty.

Waste Lands: America’s Forgotten Nuclear Legacy

The Wall St. Journal has compiled a searchable database of contaminated sites across the US. (view)
Related WSJ report: https://www.wsj.com

New & Updated

‘Not in my backyard’: The thorny issue of storing German nuclear waste

“Germany is to shut down its last nuclear reactors next year. However, the country still has no place to store the 27,000 cubic metres of highly radioactive material it has already produced, with the amount set to grow as power stations are decommissioned and dismantled. German authorities have set a deadline of 2031 to find a permanent storage location – but for now, the waste is being stored in temporary locations, much to the anger of local residents.”

© FRANCE 24 By: Anne MAILLIET | Nick SPICER france24.com December 4, 2021 / Originally published on:

'Not in my backyard': The thorny issue of storing German nuclear waste • FRANCE 24 English

ORIGINAL ARTICLE

LANL Plans to Address Possibly Exploding Drums Shipped to Texas in 2014

Waste Control Specialists near Andrews TX
Aerial View of Waste Control Specialists (WCS) on the TX/NM state line

Los Alamos National Laboratory (LANL) has given itself a Categorical Exclusion (CX) under National Environmental Policy Act (NEPA) for the removal, relocation, and examination of transuranic (TRU) waste drums at Waste Control Specialists (WCS). These drums are similar to the ones that forced WIPP to close in 2014. LANL officials decided that formal environmental assessments, with public input, of the movement of the possibly exploding waste drums are not needed.

Continue reading

Iran nuclear talks resume with upbeat comments despite skepticism

Russia’s envoy to the talks, Mikhail Ulyanov, said on Twitter they “started quite successfully.” Asked he if was optimistic, Iran’s top negotiator, Ali Bagheri Kani, told reporters: “Yes, I am.”

 

EU and Iranian negotiators struck an optimistic tone on the first day of resumed nuclear talks Monday. (Reuters)

Vienna, Austria EU, Iranian and Russian diplomats sounded upbeat as Iran and world powers held their first talks in five months on Monday to try to save their 2015 nuclear deal, despite Tehran taking a tough stance in public that Western powers said would not work.

Diplomats say time is running out to resurrect the pact, which then-US President Donald Trump abandoned in 2018 in a move which infuriated Iran and dismayed the other powers involved — Britain, China, France, Germany and Russia.
European Union, Iranian and Russian delegates to the talks offered optimistic assessments after the new round began with a session of the remaining parties to the deal, without the United States — whom Iran refuses to meet face-to-face.
“I feel extremely positive about what I have seen today,” Enrique Mora, the EU official chairing the talks, said after the meeting — the seventh round of talks aimed at reviving a deal under which Iran limited its disputed uranium enrichment program in return for relief from US, EU and UN economic sanctions.
Mora told reporters the new Iranian delegation had stuck to its demand that all sanctions be lifted. But he also suggested Tehran had not rejected outright the results of the previous six rounds of talks held between April and June.
“They have accepted that the work done over the first six rounds is a good basis to build our work ahead,” he said. “We will be of course incorporating the new political sensibilities of the new Iranian administration.”

Continue reading

Nuclear power is never safe or economical

“I hope Sen. Durbin changes his mind about promoting nuclear energy. The real carbon-free sources of electricity are wind and solar.”

Chicago Sun Times

Renewables Catching Nuclear Power In Global Energy Race
The only real sources of clean, renewable energy are wind and solar, not nuclear, a reader writes.

I cannot disagree more with the assertion by Sen. Dick Durbin in a recent Sun-Times op-ed that nuclear power is a necessary and viable way to combat climate change.

Electricity production by nuclear power is not, and can never be made, safe and economical.

When nuclear power plants were first touted in the 1950s as a new and safe method for producing electricity, it was said the electricity would be “too cheap to meter.” This is pure nonsense! If it was so safe, why weren’t any power plants built and put on line until passage of the Price-Anderson Act? The law has been amended a number of times and greatly limits the liability of operators of nuclear power plants.

Anything paid out beyond the limits set in Price-Anderson would take years of lawsuits.

Sen. Durbin wrote “It is past time for Congress to step up and develop a comprehensive, consent-based plan to store nuclear waste.” That’s an understatement. Nuclear waste is stored within a half-mile of Lake Michigan at the now-closed Zion nuclear power plant. Why is it close to the source of our drinking water? Because there is nowhere to ship it! Plans to ship such waste to a depository in Yucca Mountain in the southwest fell through when some improperly stored barrels burst into flames, releasing large amounts of high-level radioactive material.

Who does the senator think will agree to a “consent-based plan” when there is no known method of safely storing these dangerous materials for thousands of years, the time it takes for radioactive decay to make it safe for the environment?

Sen. Durbin argued that “we must ensure the nuclear fleet remains safe and economical,” but nuclear power has never been economical. As far as I know, the last time a permit was approved for a new nuclear plant was during the Obama administration. That plant in Georgia is only about half complete, although it was to be finished by now and the cost is already double the initial estimate.

The current “fleet,” as Sen. Durbin called them, of nuclear power plants were designed and engineered to last about 30 to 40 years. Most of our country’s plants are near that age. Their internal systems are constantly bombarded by radioactive particles, making the metal in the systems more brittle and prone to failure every year. Subsidizing them is a waste of taxpayer money and a dangerous gamble with our lives.

I hope Sen. Durbin changes his mind. The real carbon-free sources of electricity are renewables: wind and solar.

George Milkowski, West Ridge

Letters to the Editor: Nuclear energy may not emit carbon, but it isn’t ‘clean’

Los Angeles Times

The Diablo Canyon nuclear power plant in San Luis Obispo County is scheduled for decommissioning in 2025.(Joe Johnston / San Luis Obispo Tribune)

To the editor: Steven Chu and Ernest Moniz are both professors who served as U.S. Energy secretary. They have more science credentials than most mortals. I am none of those things.

Yet, I was concerned when I read in their piece advocating for the continued use of the Diablo Canyon nuclear plant past the planned 2025 decommissioning that they referred to the electricity it produces as “clean.”

I recognize that they did so in order to differentiate nuclear from energy sources that emit carbon dioxide. However, the lack of carbon emissions notwithstanding, can nuclear energy truly be called clean?

There is the not-so-small matter of spent nuclear fuel. Where does it go? Where will it go? It’s currently in a cooling pool on-site. Owner Pacific Gas and Electric has requested permission to develop a dry cask storage system on-site; it did not estimate how long the spent fuel would be stored there.

Spent fuel is radioactive for a very long time. Whichever way you store it, if anything compromises the containment, the danger is released.

Carbon emissions or none, it is misleading to refer to nuclear energy as clean, especially when it comes to its impact on the environment.

Elise Power, Garden Grove

..

To the editor: I was energized by the piece on the Diablo Canyon nuclear plant. It reminded me of the sad situation at our local San Onofre Nuclear Generating Station.Continue reading

Pilgrim nuclear plant may release 1M gallons of radioactive water into bay. What we know

“Diane Turco, of Harwich, the director of Cape Downwinders, a citizen group that was at the forefront of the effort to close Pilgrim, called any option that included sending radioactive water into the bay “outrageous” and “criminal.” Turco said she has no confidence in the decommissioning process.

“The process has been to allow radioactivity into the environment,” she said. “The answer should be no you can’t do that.””

Doug Fraser Cape Cod Times

PLYMOUTH — One of the options being considered by the company that is decommissioning the closed Pilgrim Nuclear Power Station is to release around one million gallons of potentially radioactive water into Cape Cod Bay.

The option had been discussed briefly with state regulatory officials as one possible way to get rid of water from the spent fuel pool, the reactor vessel and other components of the facility, Holtec International spokesman Patrick O’Brien said in an interview Wednesday. It was highlighted in a report by state Department of Environmental Protection Deputy Regional Director Seth Pickering at Monday’s meeting of the Nuclear Decommissioning Citizens Advisory Panel in Plymouth. 

Pilgrim Nuclear Power Station in Plymouth, which was permanently closed in 2019 and is undergoing decommissioning.
Pilgrim Nuclear Power Station in Plymouth, which was permanently closed in 2019 and is undergoing decommissioning.

“We had broached that with the state, but we’ve made no decision on that,” O’Brien said.

As of mid-December, Holtec will complete the process of moving all the spent fuel rods into casks that are being stored on a concrete pad on the Pilgrim plant site in Plymouth. After that, O’Brien told the panel, the removal and disposal of other components in those areas of the facility will take place and be completed sometime in February.

Continue reading

What to expect as Iran nuclear talks resume next week

“New round of talks unlikely to produce breakthrough but will shed light on posture of new Iranian government, analysts say.

aljazeera.com

The first round of nuclear talks since conservative Iranian President Ebrahim Raisi took office will start on November 29 [File: Majid Asgaripour/WANA via Reuters]
Washington, DC – Indirect negotiations between Iran and the United States to revive the nuclear deal are set to restart next week after a lengthy pause that put prospects of restoring the landmark accord in doubt.While a breakthrough is not expected, analysts have said that the talks set to begin in Vienna on November 29 will shed light on how Tehran will approach diplomacy under conservative President Ebrahim Raisi, whose government has upped Iranian demands before a return to the deal.

“We’re going to find out how different these [Iranian] hardliners are from previous hardliners; we’re going to find out if they’re going to be a little softer,” said Negar Mortazavi, an Iranian-American journalist and analyst.

“And we’re also going to find out if the Americans have really realised that they missed an opportunity, and that they should change their position to some extent.”

Proponents of the deal, including Mortazavi, have criticised US President Joe Biden for not moving with urgency to restore the agreement in the first months of his administration, when a more moderate Iranian government headed by former President Hassan Rouhani was in charge.

Six rounds of talks in Vienna between April and June failed to forge a path back into the agreement.

“That golden window of opportunity was short, and the Biden team completely missed it,” Mortazavi told Al Jazeera.

Continue reading

A spin on Kirtland Air Force Base’s (which shares runways with the ABQ International Airport) true mission from the ABQ Journal: “Air Force lab injects $2B into NM’s economy”

 The Kirtland Air Force Lab is dedicated to militarizing space, not improving the lives of New Mexico citizens.

As stated by the Arms Control Association in an April 2021 article titled Apes on a Treadmill in Space:

“The United States should recognize that a pattern of continued militarization of space is insufficient to provide the stability on which its economy and its armed forces depend, so the tools of diplomacy and international law should be marshalled too.”


A spin on Kirtland Air Force Base's (which shares runways with the ABQ International Airport) true mission from the ABQ Journal: “Air Force lab injects $2B into NM's economy”

abqjournal.com

Air Force Research Laboratory spending on space and “directed energy” technology like lasers and microwaves boosted the local economy by nearly $2 billion over the past three years, according to a new economic impact report.

Risk of quakes caused by oil, gas in New Mexico rising

“The occurrence of smaller earthquakes began to increase in 2017, when oil and gas boomed in the region, up to about three per day recently. In 2021, records show the region was on track for more than 1,200 earthquakes with magnitudes of 1 to 4.

apnews.com

CARLSBAD, N.M. (AP) — Multiple earthquakes were felt earlier this fall in West Texas, leading regulators in that state to designate a seismic response area and call for less wastewater from oil and gas development to be injected in disposal wells.

As more seismic activity was reported closer to the state line, officials in New Mexico have been watching closely and gathering data. Some officials are concerned that as Texas limits the injection of produced water as a means to curb the seismic activity, that could affect producers in New Mexico.

Continue reading

Perilous Profiteering: The companies building nuclear arsenals and their financial backers

PAX and ICAN have released the latest Don’t Bank on the Bomb report “Perilous Profiteering: The companies building nuclear arsenals and their financial backers“, which names the 338 investors backing 25 nuclear weapon producing companies and the size of their investments. This report is also the first time we were able to find information on Russian and Chinese investments.

Check out who is profiting

The report also found three clear signs that financial institutions are starting to see nuclear weapons as risky business, and are leaving them behind:

• From 2019 to 2021, the total amount made available for nuclear weapons producing companies dropped by an impressive $63 billion, and the total number of financial institutions willing to invest in nuclear weapons producing companies went down too.

• Nuclear weapons producing companies, despite billion dollar contracts, have debt. But investors are moving away. So instead, they’re borrowing from wherever they can to raise cash. In other words: producing weapons of mass destruction has become extremely unattractive.

• 127 financial institutions stopped investing in companies producing nuclear weapons this year!

Of course, we still have a lot of work to do to hold these profiteers accountable. Banks, insurers, asset managers and pension funds still made $685 billion available for the companies producing nuclear weapons (like Northrop Grumman, which has $24 billion in outstanding contracts).

Our banks, insurers, and pension funds have no business investing in companies that choose to be involved in illegal weapons of mass destruction, and we need to tell them. Read the key findings of the report HERE.

Guest Blog: Associate Director of Physicians for Social Responsibility-Los Angeles, Denise Duffield, on the Fight to Clean up California’s Contaminated Santa Susana Field Laboratory (SSFL)

Dear Friends and Colleagues:

Tonight, MSNBC will air a powerful documentary called “In the Dark of the Valley” at 7 p.m. PST/ 10 p.m. EST. The film follows the story of Melissa Bumstead, a mother whose search for answers about her young daughter’s cancer leads her to the contaminated Santa Susana Field Laboratory (SSFL), a former nuclear and rocket engine testing site near Los Angeles. I have been involved in the fight to clean up SSFL for 15 years, and PSR-LA has been involved for over 30 years. PSR-LA Board President Dr. Bob Dodge and I are featured in the film, along with our longtime ally Dan Hirsch, President of Committee to Bridge the Gap; generations of SSFL cleanup activists, and many others.

I urge you to watch the documentary tonight or record it to watch later. Not only is the film masterfully done and visually stunning, it manages to capture the heart of one of the longest and most intensely fought battles to clean up a contaminated site in the US. That’s a big deal.

I’m writing to you all today because as I reflect on the fight to cleanup SSFL — the struggles, the hard work, the heartache, the setbacks, the frustration, the power of the forces we’re up against, the greenwashing, the gaslighting,the personal sacrifices made by so many, the folks we’ve lost along the way — the fact that this film was made so well and is going to be broadcast nationally is more than a big deal. It’s a victory. And victories, especially in these troubled times, should be shared and savored. Particularly for those of you who don’t know as much about SSFL, understanding just how brutal SSFL cleanup advocacy is, and how amazing the community and cleanup advocates are, makes this film — this victory — even sweeter.

Continue reading

Current U.S. Nuclear Weapons Issues Updates — November 15, 2021

The current Continuing Resolution keeping the government running expires 12/3. Another Continuing Resolution is likely.

The Pentagon has released a major threat assessment of China at https://media.defense.gov/2021/Nov/03/2002885874/-1/-1/0/2021-CMPR-FINAL.PDF.

Under “Nuclear Capabilities” it concludes:

► Over the next decade, the PRC [People’s Republic of China] aims to modernize, diversify, and expand its nuclear forces.
► The PRC is investing in, and expanding, the number of its land-, sea-, and air-based nuclear delivery platforms and constructing the infrastructure necessary to support this major expansion of its nuclear forces.
► The PRC is also supporting this expansion by increasing its capacity to produce and separate plutonium by constructing fast breeder reactors and reprocessing facilities.
► The accelerating pace of the PRC’s nuclear expansion may enable the PRC to have up to 700 deliverable nuclear warheads by 2027. The PRC likely intends to have at least 1,000 warheads by 2030, exceeding the pace and size the DoD projected in 2020.
► The PRC has possibly already established a nascent “nuclear triad” with the development of a nuclear capable air-launched ballistic missile (ALBM) and improvement of its ground and sea-based nuclear capabilities.
► New developments in 2020 further suggest that the PRC intends to increase the peacetime readiness of its nuclear forces by moving to a launch-on-warning (LOW) posture with an expanded silo-based force.

This is bound to have a major influence on Biden’s Nuclear Posture Review, to be released in early 2022. China’s expansion of its nuclear weapons capabilities, along with U.S. and Russian “modernization” programs, may also be big issues at the January 2022 NonProliferation Treaty Review Conference.

Continue reading

WIPP: Judge upholds change in how nuke waste is counted. Could keep site open to 2050

“We know it’s part of expanding WIPP. We know what DOE is doing but DOE doesn’t want to publicly admit it and the Environment Department doesn’t want to deal with it…The reason the laws have always put limits on WIPP is that the DOE was supposed to be finding locations for other repositories. There is no other repository and that’s why they don’t want to have a limit on what goes into WIPP.” — Don Hancock, nuclear waste program director at Southwest Research and Information Center.

Adrian Hedden Carlsbad Current-Argus November 15, 2021 currentargus.com

A New Mexico appellate judge upheld a change in how the volume of nuclear waste disposed of at the Waste Isolation Pilot Plant is counted, shifting the repository from being halfway to capacity to only a third full.

In 2018, the U.S. Department of Energy requested to modify its WIPP operating permit with the New Mexico Environment Department (NMED) to change how it counts the amount of waste toward the facility’s statutory limit of 6.2 million cubic feet of transuranic (TRU) waste consisting of clothing materials and equipment irradiated during nuclear activities.

The change was intended to count the inner volume of the waste as opposed to the volume of the outer containers that hold the waste, seeking to avoid counting air between the waste itself and waste drums.

NMED approved the permit modification request (PMR) in 2019, but Albuquerque-based watchdog groups Southwest Research and Information Center and Nuclear Watch New Mexico immediately appealed the decision.

Continue reading

Al Jazeera Infographic: The World Nuclear Club

While 32 countries generate atomic energy, nine have nuclear weapons and seven countries have both.

aljazeera.com

Nuclear warheads per country

Nine countries possessed roughly 13,150 warheads as of August 2021, according to the Federation of American Scientists. More than 90 percent are owned by Russia and the US.

At the peak in 1986, the two rivals had nearly 65,000 nuclear warheads between them, making the nuclear arms race one of the most threatening events of the Cold War. While Russia and the US have dismantled thousands of warheads, several countries are thought to be increasing their stockpiles, most notably China.

According to the Pentagon’s 2021 annual report (pdf), China’s nuclear warhead stockpile is expected to more than triple and reach at least 1,000 by 2030.

The only country to voluntarily relinquish nuclear weapons is South Africa. In 1989, the government halted its nuclear weapons programme and in 1990 began dismantling its six nuclear weapons. Two years later, South Africa joined the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) as a non-nuclear country.

With the 26th UN Climate Change Conference over, nations are making plans to move to green energy in a bid to tackle global warming.

But nuclear energy is a particular sticking point. While it is the largest source of low-carbon electricity in OECD countries, some nations have spoken out against the categorisation of nuclear energy as climate-friendly.

Across the globe, 34 countries harness the power of splitting atoms for generating electricity or for nuclear weapons. (Al Jazeera)

Global nuclear energy

Nuclear energy provides roughly 10 percent of the world’s electricity. Of the 32 countries with nuclear power reactors, more than half (18) are in Europe. France has the world’s highest proportion of its electricity – at 71 percent – coming from atomic power.

Up until 2011, Japan was generating some 30 percent of its electricity from nuclear reactors; however, following the Fukushima disaster, all nuclear power plants were suspended for safety inspections. As of 2020, just 5 percent of Japan’s electricity came from nuclear power, according to the World Nuclear Association.

Nuclear power constitutes some 20 percent of the United States’ electricity. About 60 percent of the country’s energy comes from fossil fuels, including coal, natural gas and petroleum, with the remaining 20 percent coming from renewable sources – wind, hydro and solar.

Continue reading

Flooding and Nuclear Waste Eat Away at a Tribe’s Ancestral Home

The federal government allowed a stockpile of spent fuel on a Minnesota reservation to balloon even as a dam project whittled down the amount of livable land.

Interviews and documents obtained by The New York Times show how the state of Minnesota and the federal government ignored warnings about potential dangers posed to the tribe as they kept allowing the amount of waste stored on the reservation to expand and did little to address annual flooding that harms the tribe’s economy.

“I mean, this is a classic environmental justice fact pattern,” said Heather Sibbison, chair of Dentons Native American law and policy practice at Dentons Law Firm. “We have a minority community, a disadvantaged community, bearing the brunt of two huge infrastructure projects that serve other people.”

By Mark Walker nytimes.com

Xcel Energy runs the Prairie Island nuclear plant near the reservation and has stored 47 canisters of nuclear waste close to the homes of tribe members.Credit…Laylah Amatullah Barrayn for The New York Times

For decades, chronic flooding and nuclear waste have encroached on the ancestral lands in southeastern Minnesota that the Prairie Island Indian Community calls home, whittling them to about a third of their original size.

Two years after the tribe received federal recognition in 1936, the Army Corps of Engineers installed a lock-and-dam system just to the south along the Mississippi River. It repeatedly flooded the tribe’s land, including burial mounds, leaving members with only 300 livable acres.

Decades later, a stockpile of nuclear waste from a power plant next to the reservation, which the federal government reneged on a promise to remove in the 1990s, has tripled in size. It comes within 600 yards of some residents’ homes.

With no room to develop more housing on the reservation, more than 150 tribal members who are eager to live in their ancestral home are on a waiting list.

Cody Whitebear, 33, who serves as the tribe’s federal government relations specialist, is among those waiting. He hopes he can inherit his grandmother’s house, which is on the road closest to the power plant.

“I never had the opportunity to live on the reservation, be part of the community,” said Mr. Whitebear, who began connecting with his heritage after the birth of his son, Cayden. “In my mid-20s I had the desire to learn about my people and who I am and who we are.”

Proposed plutonium shipments concern New Mexico lawmakers

“The agency has said little overall about its plans, despite the potential hazards, said Cindy Weehler, who co-chairs the watchdog group 285 ALL.

santafenewmexican.com

Proposed plutonium shipments concern New Mexico lawmakers

A panel of state lawmakers expressed concerns Friday about plans to truck plutonium shipments through New Mexico, including Santa Fe’s southern edge, and will send letters to state and federal officials asking for more information on the transports.

Two opponents of the shipments — a Santa Fe County commissioner and a local activist — presented the Department of Energy’s basic plan to the Legislature’s Radioactive and Hazardous Materials Committee, provoking a mixture of surprise and curiosity from members.

Several lawmakers agreed transporting plutonium is more hazardous because it is far more radioactive than the transuranic waste — contaminated gloves, equipment, clothing, soil and other materials — that Los Alamos National Laboratory now ships to the Waste Isolation Pilot Plant, an underground disposal site near Carlsbad.

Continue reading

It seems we can’t find what you’re looking for. Perhaps searching can help.

New Nuclear Media: Art, Films, Books & More

It seems we can’t find what you’re looking for. Perhaps searching can help.

Scroll to top