This is an expanded version of the review of Eruption: The Untold Story of Mount St. Helens, by Steve Olson, which first appeared in the April-May 2017 issue of American Scientist.
When I visit environmental history–related locations, I typically bring back two reminders of the trip: photographs I’ve taken and rocks I’ve collected from the sites. When I returned from a trip to Wallace, Idaho, in 2009—a small, picturesque town located in the state’s panhandle and surrounded by national forests—I came home with rocks and a small vial of volcanic ash from Mount St. Helens.
The vial measures about 1.75″ in length but contains a great deal of information and memory.
The rocks came from outside the abandoned mine where, in 1910, Forest Service ranger Ed Pulaski and his men rode out one of the most famous wildfires in American history. Known as “the Big Burn,” the conflagration consumed 3 million acres in about 36 hours. Burning embers and ash fell upon Wallace, and fire consumed about half the town. The fire transformed the U.S. Forest Service, then only five years old; the lessons agency leadership drew from it—that more men, money, and material could prevent and possibly remove fire from the landscape—eventually became policy. The agency’s decision to fight and extinguish all wildfires, known as the “10 a.m. policy,” is one America is still dealing with because of the ecological impact removing fire from the landscape for half a century has had.
Seventy years later, another famous natural disaster coated the town in ash when Mount St. Helens, which sits in the middle of the Gifford Pinchot National Forest in southeastern Washington, erupted, sending some of its content miles into the air and drifting east towards Wallace and beyond. The vial I brought back contains some of that ash. The tiny container is a reminder that this disaster, too, transformed the Forest Service. It also transformed the U.S. Geological Survey.
The transformation began on March 20, 1980. After 123 years of dormancy, Mount St. Helens woke up. Seismometers had detected a 4.0 earthquake about a mile below the surface of the volcano, which is located in the Gifford Pinchot National Forest in southwestern Washington. In the days immediately following, more quakes were recorded, as many as 40 an hour. These weren’t aftershocks—it was a volcanic swarm. Business owners, loggers, and the media demanded to know when the volcano was going to blow. As Seattle-based journalist Steve Olson discusses in his book Eruption: The Untold Story of Mount St. Helens (W.W. Norton, 2016), there was no easy answer: The science wasn’t there yet. But as Olson demonstrates, the lack of clear scientific guidance and an absence of straightforward jurisdictional relationships fostered government inaction at all levels, with disastrous results. Given recent seismic activity around Mount St. Helens (earthquake swarms were recorded in June and November of 2016, although these gave no indication of imminent danger), revisiting the events of 1980 seems especially timely.
Just after the March 20th quake, some immediate protective measures were taken. The Weyerhaeuser Company, which was harvesting some of the last old-growth timber on its land surrounding Mount St. Helens on land it had owned since 1900, evacuated its 300 employees, and the Washington Department of Emergency Services advised everyone within 15 miles of the volcano to leave the area. But within a week, restlessness set in. After all, livelihoods were at stake. Area law enforcement couldn’t keep U.S. Forest Service roads closed to the public indefinitely and, given Weyerhaeuser’s economic and political influence in the region, public safety officials dared not close roads on its land. Beyond that, law enforcement simply didn’t have the resources to staff all the roads that snaked their way through the forest and around the volcano and nearby Spirit Lake.
Peeling Back the Bark 