North Rochelle Mine, WY

North Rochelle Mine, WY


North Rochelle Mine
Reinforced Earth wire wall slope wall
Location: 
Wright, Wyoming
Owner: 
Triton Coal Company
Contractor: 
Roberts & Schaeffer Company
Subcontractor: 
Hladkey Construction
Engineer: 
Roberts & Schaeffer Company

The Reinforced Earth Company (RECo) successfully completed another bulk material storage bunker under contract from Roberts & Schaeffer Company at the North Rochelle Mine located in the Powder River Basin near Wright, Wyoming.  The owner, Triton Coal Company, contracted with Roberts & Schaeffer for construction management services while Hladkey Construction, Inc., was responsible for the actual construction of the bunker.

The high-volume, slot-type coal bunker, is 110m long and 23m tall and utilizes Reinforced Earth precast concrete faced sloped wall technology to form a steeply sloped V-shaped gravity feed structure referred to as a slot. Vertical Reinforced Earth end walls contain the ends of the slot. 

In addition to the slot structure, RECo also supplied design, materials, and construction assistance for the 18m tall permanent headwall at North Rochelle's primary crusher unit utilizing the Terratrel wire-faced Reinforced Earth system.  The wall is designed for a live load surchage of 240-ton trucks, which supply coal to the primary crusher.