Smoky Canyon Dam - Earthfill Dam Raise J. R. Simplot Afton, Wyoming DelHur raised the existing earthen dam by 43 feet. The project included dewatering the downstream foundation, aeration of unsuitable foundation material, a sand filter drainage system, placement of select backfill, compacted embankment fill and hauling and placing riprap from the mine site [...]

Summitville Mine Reclamation Superfund Site Colorado Department of Public Health San Luis, CO The Summitville Mine located in the San Juan Mountains of southwest Colorado is 11,500 feet above sea level and approximately 20 miles southwest of Del Norte, Colorado. Gold and silver mining activities began in 1870 and large-scale open pit mining began in the mid 1980's. [...]

Gilt Edge Mine Superfund Site - Phase 2 Ruby Gulch Waste Repository and Cap Remedial Action Bureau of Reclamation Deadwood, SD The Gilt Edge Mine is an abandoned former open pit gold mine site just southeast of the town of Lead in the Northern Black Hills of South Dakota. Gold has been mined at [...]

Lisbon Valley – Heap Leach Pad & Ponds Construction Stage I & Mill Infrastructure Site Work Lisbon Valley Mining Company Lisbon Valley, Utah The Lisbon Valley Mine is an open pit copper mine located in the Four Corners region of southeastern Utah (southeast of Moab and northeast of Monticello). DelHur was hired by the mine [...]

Wasco County Landfill - Cells 1B and 2A Waste Connections, Inc. The Dalles, Oregon Wasco County Landfill is a municipal solid waste disposal facility located approximately 6 miles from The Dalles, Oregon and is owned and operated by Waste Connections, Inc. DelHur was contracted to perform disposal cell expansion services at this facility. Major items [...]