52 Week High/Low 52 Week High is the highest sales price the stock has achieved during the regular trading hours during the most recent 52 week period. 52 Week Low is the lowest sales price the stock has fallen to during the regular trading hours during the most recent 52 week period. $ 6.90 / $ 4.38.
57: Number of people who died May 18, 1980, after the Mount St. Helens eruption. 600: Number of truckloads of salvaged timber retrieved each day during the summer after the blast. 3: Number of minutes it took for the near-supersonic lateral blast to blow down and scorch 230 square miles of forest.
Mount St. Helens produces small to large explosive eruptions, which send varying quantities of ash and tephra into the atmosphere. The May 18, 1980 tephra plume lasted for about eight hours and the plume top ranged from 14â18 km (8.5â11 mi) high.ount St. Helens produces small to large explosive eruptions, which send varying quantities of ash and tephra into the atmosphere. The May 18, 1980 tephra plume lasted for about eight hours and the plume top ranged from 14â18 km (8.5â11 mi) high.