On August 5th, 2007, dozens of miners entered the massive labyrinth that was the Crandall Canyon mine.

Unbeknownst to these miners, something terrible was waiting deep underground, and horrifyingly for many of them, this would be the last time they would ever see the light of day.

This is their story, and as always always viewer discretion is advised.

About 140 miles south of Salt Lake City Utah is where where you'll find Montailles-Lassau National

Forest.

This forest is a massive preservation of 1.2 million acres and also includes the state's

second highest mountain range, which are the LaSalle Mountains.

Right in the middle of all of it is the Crandall Canyon Mine.

Unlike many mines, which often spur the development of nearby towns, the Crandall Canyon Mine. Unlike many mines, which often spurred the development of nearby towns,

the Crandall Canyon Mine is fairly remote. The near civilization is Huntington, which is a town of

around 2,000 people and sits about 10 miles to the southeast of the mine. Mining there began in

1939, it continued all the way until 1955, but it would then sit untouched until the early 1980s

when it was bought out by two other companies.

The new co-owners contracted mining operations out to a coal company which employed around

70 miners at any given time afterward.

Together, they would also update the mine with modern equipment and transportation systems,

and by 1991, as much as 1.5 million tons of coal

were removed from the mine each year. As the summer of 2007 were on, the Crandall Canyon

mine had thousands feet of corridors that ran thousands of feet deep, providing more than

enough work to keep mining going 24 hours a day, seven days a week. In a week's time, miners there

were 12-hour shifts and were split into several groups.

Two separate crews would handle the day and night shifts Tuesday through Thursday, and two

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