When an asset is no longer useful, it should be sold, traded, or discarded. The first step in recording the disposal of a plant asset is to update depreciation. Updating depreciation involves recording the depreciation expense for the time between the date on which depreciation was last recorded and the disposal date.
The largest mudslide in recorded history occurred just 140 miles south of Oso, on the slope of Mount St. Helens, when the volcano erupted in May 1980. The intense heat from the eruption instantly turned more than 70% of the snow and glacial ice on the mountain to water.
A Washington state geologist stated the slide was one of the largest landslides he had personally seen. The mud, soil and rock debris left from the mudslide covered an area 1,500 ft (460 m) long, 4,400 ft (1,300 m) wide and deposited debris 30 to 70 ft (9.1 to 21.3 m) deep.