 Though the GSC concluded that mining activities contributed to the slide , the facility 's owners disagreed . Their engineers claimed that the mine bore no responsibility . Later studies suggested that the mountain had been at a point of " equilibrium " ; even a small deformation such as that caused by the mine 's existence would have helped trigger a slide . The mine was quickly re @-@ opened , even though rock continued to tumble down the mountain . Coal production at Frank peaked in 1910 , but the mine was permanently closed in 1917 after it became unprofitable . 
 Though the GSC concluded that mining activities contributed to the slide , the facility <a href='null_genetive' title='1'><mark>'s</mark></a>owners disagreed . Their engineers claimed that the mine bore no responsibility . Later studies suggested that the mountain had been at a point of " equilibrium " ; even a small deformation such as that caused by the mine <a href='null_genetive' title='2'><mark>'s</mark></a>existence would <a href='been_done' title='3'><mark>have</mark></a> helped trigger a slide . The mine was quickly re @-@ opened , even though rock continued to tumble down the mountain . Coal production at Frank peaked in 1910 , but the mine was permanently closed in 1917 after it became unprofitable . 
Tho the GSC concluded dat mining activities contributed to da slide , the facility  owners disagreed . Their engineers claimed tdatthe mines bore no responsibility . Later studies suggested that the mountain had been at a point of " equilibrium " ; even a small deformation such as that caused by the mine  existence would done helped trigger a slide . Tdamine was quickly re @-@ opened , even thothock continued to tumble downn the mountain . Coal production at Frank peaked in 1910 , but the mine was permanently closed in 1917 after it became unprofitable .