 The Frank Slide was a rockslide that buried part of the mining town of Frank , Alberta , Canada . The province of Alberta was not created until September 1905 , more than two years after the slide . The community was still part of the Northwest Territories when the incident occurred at 4 : 10 am on April 29 , 1903 . Over 82 million tonnes ( 90 million tons ) of limestone rock slid down Turtle Mountain within 100 seconds , obliterating the eastern edge of Frank , the Canadian Pacific Railway line and the coal mine . It was one of the largest landslides in Canadian history and remains the deadliest , as between 70 and 90 of the town 's residents were killed , most of whom remain buried in the rubble . Multiple factors led to the slide : Turtle Mountain 's formation left it in a constant state of instability . Coal mining operations may have weakened the mountain 's internal structure , as did a wet winter and cold snap on the night of the disaster . 
 The Frank Slide was a rockslide <a href='null_relcl' title='1'><mark>that</mark></a>buried part of the mining town of Frank , Alberta , Canada . The province of Alberta was not created until September 1905 , more than two years after <a href='None' title='2'><mark>the</mark></a><a href='negative_concord' title='3'><mark>slide</mark></a> . The community was still part of the Northwest Territories when the incident occurred at 4 : 10 am on April 29 , 1903 . Over 82 million tonnes ( 90 million tons ) of limestone rock slid down Turtle Mountain within 100 seconds , obliterating the eastern edge of Frank , the Canadian Pacific Railway line and the coal mine . It was one of the largest landslides in Canadian history and <a href='uninflect' title='4'><mark>remains</mark></a> the deadliest , as between 70 and 90 of the town <a href='null_genetive' title='5'><mark>'s</mark></a>residents <a href='uninflect' title='6'><mark>were</mark></a> killed , most of whom remain buried in the rubble . Multiple factors led to the slide : Turtle Mountain <a href='null_genetive' title='7'><mark>'s</mark></a>formation left it in a constant state of instability . Coal mining operations may <a href='been_done' title='8'><mark>have</mark></a> weakened the mountain <a href='null_genetive' title='9'><mark>'s</mark></a>internal structure , as did a wet winter and cold snap on the night of the disaster . 
Da Frank Slide was a rockslide buried part of the mining town of Frank , Alberta , Canada . The province of Alberta was not created until September 1905 , more than two years after no slide . Tdacommunity was still part of the Northwest Territories when the incident occurred at 4 : 10 am on April 29 , 1903 . ova 82 million tonnes ( 90 million tons ) of limestone rock slid down Turtle Mountain within 100 seconds , obliterating the eastern edge of Frank , thdaanadian Pacific Railway line and the coal mine . It was one of the largest landslides in Canadian history and remain the deadliest , as between 70 and 90 of thedawn  residents was killed , most of whom remain buried in the rubble . Multiple factors led to the dade : Turtle Mountain  formation left it in a constant state of instability . Coal mining operations may done weakened the mountain  internal structure , as did a wet winter and cold snap on the ndat of the disaster .