29515 Routt County Road 27
Oak Creek, CO 80467
Coal from the Twentymile Mine has a high heating value of 11,200 Btu per pound and low sulfur and ash content, which makes it ideal for electricity generation.
Twentymile is a longwall operation, with one of the fastest, most powerful shearers in operation and longwall panels that are 1,000 feet wide and more than two miles long.
The operation’s conveyor belt travels more than five miles underground and two miles on the surface. The Twentymile preparation plant is the largest of its kind west of the Mississippi River.