Idle Port of Portland cranes with Mount St. Helens in the background are seen after "Occupy Portland", to attempt to shut down west coast ports in Oregon December 12, 2011. REUTERS/Steve Dipaola (UNITED STATES - Tags: POLITICS BUSINESS CIVIL UNREST) 

Lady Hillary, wife of Mount Everest hero Sir Edmund Hillary, wipes away a tear while sitting next to Prime Minister Helen Clark (R) in St Mary's church in Auckland, during his state funeral January 22, 2008. REUTERS/Brett Phibbs/POOL (NEW ZEALAND) 

Lady Hillary (L), the wife of Mount Everest hero Sir Edmund Hillary, stands with New Zealand's Prime Minister Helen Clark outside St Mary's church in Auckland after Sir Edmund's state funeral January 22, 2008. REUTERS/Nigel Marple (NEW ZEALAND) 

Lady Hillary (3rd R) and Prime Minister Helen Clark (R) follow the pallbearers as they carry the coffin containing Mount Everest hero Sir Edmund Hillary from St Mary's church after his state funeral in Auckland January 22, 2008. REUTERS/Simon Baker (NEW ZEALAND) 

Lady Hillary (L), wife of Mount Everest hero Sir Edmund Hillary, and Prime Minister Helen Clark share a moment in St Mary's church in Auckland, during his state funeral January 22, 2008. REUTERS/Brett Phibbs/Pool (NEW ZEALAND) 

New Zealand Prime Minister Helen Clark (R) blows her nose while sitting next to Lady Hillary, wife of Mount Everest hero Sir Edmund Hillary, in St Mary's church in Auckland, during his state funeral January 22, 2008. REUTERS/Brett Phibbs/Pool (NEW ZEALAND) 

Lady Hillary (L), wife of Mount Everest hero Sir Edmund Hillary, and Prime Minister Helen Clark leave in the recession at St Mary's church in Auckland after his state funeral January 22, 2008. REUTERS/Nigel Marple (NEW ZEALAND) 

Lady Hillary (L), wife of Mount Everest hero Sir Edmund Hillary, and Prime Minister Helen Clark leave St Mary's church in Auckland after his state funeral January 22, 2008. REUTERS/Nigel Marple/Pool (NEW ZEALAND) 

Lady Hillary (C), wife of Sir Edmund Hillary, and Prime Minister Helen Clark (R) leave St Mary's church after the state funeral for the Mount Everest hero in Auckland January 22, 2008. REUTERS/Simon Baker (NEW ZEALAND) 

New Zealand Prime Minister Helen Clarke (R) sits with Mount Everest hero Sir Edmund Hillary's wife Lady Hillary in St Mary's church in Auckland, during his state funeral January 22, 2008. REUTERS/Brett Phibbs/Pool (NEW ZEALAND) 

Lady Hillary (C), wife of Mount Everest hero Sir Edmund Hillary, and New Zealand Prime Minister Helen Clark arrive with Clark's husband Peter Davis (R), Dean of Christchurch Peter Beck (2nd R) and Dean of Auckland Ross Bay at St Mary's church in Auckland for Edmund Hillary's state funeral January 22, 2008. REUTERS/Nigel Marple/Pool (NEW ZEALAND) 

New Zealand Prime Minister Helen Clark (R) sits with Lady Hillary, wife of Mount Everest hero Sir Edmund Hillary, near his casket in St Mary's church in Auckland, during his state funeral January 22, 2008. REUTERS/Brett Phibbs/Pool (NEW ZEALAND) 

Lady Hillary (2nd R), wife of Mount Everest hero Sir Edmund Hillary, and New Zealand Prime Minister Helen Clark (3rd R) arrive with the Dean of Christchurch Peter Beck (R) and Dean of Auckland Ross Bay at St Mary's church in Auckland for his state funeral January 22, 2008. REUTERS/Nigel Marple/Pool (NEW ZEALAND) 

New Zealand Prime Minister Helen Clark speaks during the state funeral for Mount Everest hero Sir Edmund Hillary in St. Mary's Church in Auckland January 22, 2008. REUTERS/John Selkirk/Pool (NEW ZEALAND) 

Lady Hillary (C), wife of Mount Everest hero Sir Edmund Hillary, touches the casket of her husband during his state funeral as New Zealand's Prime Minister Helen Clark (R) watches in St. Mary's Church in Auckland January 22, 2008. REUTERS/Brett Phibbs/Pool (NEW ZEALAND) 

Lady Hillary (2nd L), wife of Mount Everest hero Sir Edmund Hillary, arrives for her husband's state funeral with New Zealand's Prime Minister Helen Clark (L), Clark's husband Peter Davis (2nd R) and the Dean of Christchurch Peter Beck at St. Mary's Church in Auckland January 22, 2008. REUTERS/Nigel Marple/POOL (NEW ZEALAND) 

Lady Hillary (R), wife of Mount Everest hero Sir Edmund Hillary, arrives for her husband's state funeral with New Zealand's Prime Minister Helen Clark at St. Mary's Church in Auckland January 22, 2008. REUTERS/Nigel Marple (NEW ZEALAND) 

Steam vents out of the crater of Mount St. Helens, October 10, 2004. Very little seismic activity was detected overnight and the steam began to rise just after dawn and has continued throughout the day and into evening. The lava dome has risen over 300 feet in the last two weeks. 

Will Kramer, 7, uses his dad's telescope to look up at Mount St. Helens venting steam October 11, 2004. The Washington State volcano has been letting off steam for the last two days and scientists expect will do so for the days to come. Seismic activity has been low in the last couple days but it is believed magma is very close to surface and could break through anytime. Picture taken through double-paned window. REUTERS/Andy Clark AC/SV 

Visitors to the Coldwater Ridge Center look up at Mount St. Helens venting steam October 11, 2004. The Washington State volcano has been letting off steam for the last two days and scientists expect will do so for the days to come. Seismic activity has been low in the last couple days but it is believed magma is very close to surface and could break through anytime. REUTERS/Andy Clark AC 

Residents of Toutle, Washington spend some quiet time fishing as Mount St. Helens simmers in the distance October 11, 2004. The volcano has been letting off steam for the last two days and scientists expect will do so for the days to come. Seismic activity has been low in the last couple days but it is believed magma is very close to the surface and could break through anytime. REUTERS/Andy Clark AC 

A high flying jet leaves a contrail as steam vents from the lava dome inside Mount St. Helens October 11, 2004. The Washington State volcano has been letting off steam for the last two days and scientists expect will do so for the days to come. Seismic activity has been low in the last couple days but it is believed magma is very close to surface and could break through anytime. REUTERS/Andy Clark AC 

Steam vents from the lava dome inside Mount St. Helens October 11, 2004. The Washington State volcano has been letting off steam for the last two days and scientists expect will do so for the days to come. Seismic activity has been low in the last couple days but it is believed magma is very close to the surface and could break through anytime. REUTERS/Andy Clark AC 

Mount St. Helens is shrouded in clouds at sunset October 10, 2004. Steam began rising just after dawn continuing throughout the day into the evening. The lava dome has risen over 300 feet in the last two weeks. REUTERS/Andy Clark AC 

Mount St. Helens is shrouded in clouds at sunset, October 10, 2004. Steam began rising just after dawn continuing throughout the day into evening. The lava dome has risen over 300 feet in the last two weeks. REUTERS/Andy Clark AC 

A couple walk along a ridge as steam from inside the crater of Mount St. Helens, October 10, 2004. Very little seismic activity was detected overnight and the steam began to rise just after dawn continuing throughout the day into evening. The lava dome has risen over 300 feet in the last two weeks. REUTERS/Andy Clark AC 

Steam vents out of the crater of Mount St. Helens, October 10, 2004. Very little seismic activity was detected overnight and the steam began to rise just after dawn and has continued throughout the day and into evening. The lava dome has risen over 300 feet in the last two weeks REUTERS/Andy Clark AC 

Steam vents itself out of the lava dome inside the crater of Mount St. Helens, in the state of Washington, October 10, 2004. Very little seismic activity was detected overnight and the steam began to rise just after dawn. The lava dome has risen over 300 feet in the last two weeks REUTERS/Andy Clark AC/GN 

Steam vents itself out of the lava dome inside the crater of Mount St. Helens October 10, 2004. Very little seismic activity was detected overnight and the steam began to rise just after dawn. The lava dome has risen over 300 feet in the last two weeks. REUTERS/Andy Clark AC/SV 

Steam vents itself out of the lava dome inside the crater of Mount St. Helens October 10, 2004. Very little seismic activity was detected overnight and the steam began to rise just after dawn. The lava dome has risen over 300 feet in the last two weeks. REUTERS/Andy Clark AC/SV 

Visitors to the Coldwater Ridge Center are surrounded by storm clouds near Mount St. Helens October 9, 2004. Though two days of rainy weather have left the simmering volcano shrouded in cloud a regular stream of people have traveled in hopes of seeing St. Helens. Seismic activity continues to shake the mountain and the magma dome inside the crater grows steadily. REUTERS/Andy Clark AC 

Visitors to the Coldwater Ridge Center are surrounded by storm clouds near Mount St. Helens October 9, 2004. Though two days of rainy weather have left the simmering volcano shrouded in cloud a regular stream of people have traveled in hopes of seeing St. Helens. Seismic activity continues to shake the mountain and the magma dome inside the crater grows steadily. REUTERS/Andy Clark AC 

The remains of a tree from the 1980 eruption overlooks the valley at the foot of Mount St. Helens October 9, 2004. A storm front from the Pacific has been hanging over the area for two days shrouding the simmering volcano in clouds (back). Seismic activity continues to shake the mountain and the magma dome inside the crater continues to grow. REUTERS/Andy Clark AC/SV 

The remains of an upturned tree from the 1980 eruption frames an isolated rain storm crossing the valley at the foot of Mount St. Helens, October 9, 2004. A storm front from the Pacific has been hanging over the area for two days shrouding the simmering volcano in clouds. Seismic activity continues to shake the mountain and the magma dome inside the crater continues to grow. REUTERS/Andy Clark AC/SV 

Willie Scott of the United States Geological Survey describes acitivity inside the crater of Mount St. Helens, during a news conference at the Coldwater Ridge Visitors Center, October 8, 2004. Government scientists said activity continues inside the crater but has reduced in intensity. 

A laptop computer displays seismic activity inside Mount St. Helens, October 8, 2004. The computer is on display at the Coldwater Ridge Visitors Center not far from the volcano. Government scientists said activity continues inside the crater but has reduced in intensity. 

A laptop computer displays seismic activity inside Mount St. Helens, October 8, 2004. The computer is on display at the Coldwater Ridge Visitors Center not far from the volcano. Government scientists said activity continues inside the crater but has reduced in intensity. REUTERS/Andy Clark AC 

Willie Scott of the United States Geological Survey describes acitivity inside the crater of Mount St. Helens, during a news conference at the Coldwater Ridge Visitors Center, October 8, 2004. Government scientists said activity continues inside the crater but has reduced in intensity. REUTERS/Andy Clark AC 

Willie Scott of the United States Geological Survey describes acitivity inside the crater of Mount St. Helens, during a news conference at the Coldwater Ridge Visitors Center, October 8, 2004. Government scientists said activity continues inside the crater but has reduced in intensity. REUTERS/Andy Clark AC 

Clouds drift across the crater of Mount St. Helens at dusk, in this time exposure October 7, 2004. Government scientists said that volcanic activity on Washington state's Mount St. Helens had started to taper off and downgraded their safety warning since Wednesday, following nearly two weeks of seismic activity and steam eruptions. 

Contrails from commercial jets flying north and south leave their mark in the sky over Mount St. Helens October 7, 2004. Government scientists have reduced the eruption threat level from three to two, though seismic activity has begun rise again inside the volcano. 

A tourist to the Cold Lake Visitor Center relaxes in the afternoon sun while watching Mount St. Helens October 7, 2004. Government scientists have reduced the eruption threat level from three to two though seismic activity has begun to rise again inside the volcano. 

Clouds drift across the crater of Mount St. Helens at dusk, in this time exposure October 7, 2004. Government scientists said that volcanic activity on Washington state's Mount St. Helens had started to taper off and downgraded their safety warning since Wednesday, following nearly two weeks of seismic activity and steam eruptions. REUTERS/Andy Clark AC/GN 

Tourists at the Cold Lake Visitor Center try to get a close look of the crater at Mount St. Helens October 7, 2004. Government scientists have reduced the eruption threat level from three to two, though seismic activity has begun to rise again inside the volcano. REUTERS/Andy Clark AC 

A tourist to the Cold Lake Visitor Center relaxes in the afternoon sun while watching Mount St. Helens October 7, 2004. Government scientists have reduced the eruption threat level from three to two though seismic activity has begun to rise again inside the volcano. REUTERS/Andy Clark AC/SV 

The stump of a tree destroyed in the 1980 eruption is bathed in the dawn sun as small trail of steam exits the crater of Mount St. Helens (R) October 7, 2004. Government scientists have downgraded the threat level of the volcano from three to two after seismic activity decreased. REUTERS/Andy Clark AC 

The stump of a tree destroyed in the 1980 eruption frames the dawn sun as small trail of steam exits the crater of Mount St. Helens, October 7, 2004. Government scientists have downgraded the threat level of the volcano from three to two after seismic activity decreased. REUTERS/Andy Clark AC/SV 

Officials have downgraded the alert level for Mount St. Helens from three to two after seismic activity decreased significantly inside the the volcano over the last 24 hours October 6, 2004. Photo shows St. Helens during it's last eruption October 5. 

Three-year-old Orion tries to view Mount St. Helens from a public viewing area October 6, 2004. Rainy weather has descended on the area, obscuring the volcano in clouds and fog. Officials have downgraded the alert level for St. Helens from three to two after seismic activity decreased significantly in the last 24 hours. 

Visitors leave the area around Mount St. Helens (R) near dusk, south of Seattle, October 6, 2004. Hundreds travel to and camp overnight in the area each day in hopes they might see St. Helens erupt. Government scientists said that volcanic activity on Washington state's Mount St. Helens had started to taper off and downgraded their safety warning on Wednesday, following nearly two weeks of seismic activity and steam eruptions. REUTERS/Andy Clark AC/GN 

People sit by the side of the road with a camera on a tripod waiting and hoping for any signs of eruption from Mount St. Helens, south of Seattle, October 6, 2004. Government scientists said that volcanic activity on Washington state's Mount St. Helens had started to taper off and downgraded their safety warning on Wednesday, following nearly two weeks of seismic activity and steam eruptions. REUTERS/Andy Clark AC/GN 

Officials have downgraded the alert level for Mount St. Helens from three to two after seismic activity decreased significantly inside the the volcano over the last 24 hours October 6, 2004. Photo shows St. Helens during it's last eruption October 5. REUTERS/Andy Clark AC/SV 

Signs on the highway heading to Mount St. Helens refer to the volcano October 6, 2004. Officials have downgraded the alert level for St. Helens from three to two after seismic activity decreased significantly in the last 24 hours. REUTERS/Andy Clark AC 

A sign on the outside of a campground uses humor to warn those heading up to the volcano Mount St. Helens October 6, 2004. Officials have downgraded the alert level for Mt. St. Helens from three to two after seismic activity decreased significantly in the last 24 hours. REUTERS/Andy Clark AC 

Three-year-old Orion tries to view Mount St. Helens from a public viewing area October 6, 2004. Rainy weather has descended on the area, obscuring the volcano in clouds and fog. Officials have downgraded the alert level for St. Helens from three to two after seismic activity decreased significantly in the last 24 hours. REUTERS/Andy Clark AC 

-PHOTO TAKEN 01OCT04- Mount St. Helens crater glacier's vent is photographed on October 1, 2004. Mount St. Helens spewed more steam and ash on Monday, raising concerns about a larger eruption at the Washington state volcano that woke last week after 18 years of slumber. Photo taken on October 1, 2004.
(CREDIT : REUTERS/Steve Schilling/U.S. Geological Survey/Handout)
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-PHOTO TAKEN 01OCT04- Mount St. Helens spews steam and gray ash from a small explosive eruption in its crater on October 1, 2004. Mount St. Helens spewed more steam and ash on Monday, raising concerns about a larger eruption at the Washington state volcano that woke last week after 18 years of slumber. Photo taken at 12:08:38 PDT on October 1, 2004.
(CREDIT : REUTERS/John Pallister/U.S. Geological Survey/Handout)
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-PHOTO TAKEN 01OCT04- Mount St. Helens spews steam and gray ash from a small explosive eruption in its crater on October 1, 2004. Mount St. Helens spewed more steam and ash on Monday, raising concerns about a larger eruption at the Washington state volcano that woke last week after 18 years of slumber. Photo taken at 12:08:38 PDT on October 1, 2004.
(CREDIT : REUTERS/John Pallister/U.S. Geological Survey/Handout)
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Ash continues to drift out from inside the crater of Mount St. Helens (R) as unusual cloud formations gather nearby October 5, 2004. Earlier in the day, the mountain had its second eruption in two days. The Washington State volcano has had three small eruptions over the last five days. REUTERS/Andy Clark AC 

Dirt, ash and clouds close in on Mount St. Helens and following an eruption earlier in the day and a weather front moves in October 5, 2004. Mount St. Helens has had three small eruptions including two days in row since the volcano came to life after 18 years. REUTERS/Andy Clark AC