Las Palmas Mine
Las Palmas mine was operated from the early 1980’s until 1997. The mine was closed and the tailings
area partially covered with a thin layer of gravelly material. The profile seen at the upper failure scarp shows the gravelly cover layer and unsaturated tailings. Variable oxidation of the tailings has occurred with colours varying from tan to rusty in oxidized tailings to grey in unoxidized tailings. Clear evidence of liquefaction of the tailings with sand boils and ejecta along cracks indicating some portion of the tailings was saturated. Tailings flowed almost 0.5 kilometers.