Marshall Mesa trailhead closing as crews begin excavation to cool smoldering coal seam The Colorado Sun
A coal seam has been smoldering under Boulder County for decades. Crews are finally putting it out Colorado Public Radio
How do you extinguish a coal fire that’s burned under Boulder County for a century? The Denver Post
Excavation Endeavor Creates I-70's First Wildlife Crossing in Colorado Construction Equipment Guide
Thousands of underground utility industry professionals to meet in Colorado coloradopolitics.com
Fiber contractors fined for damaging 766 lines, causing outages KOAA News 5
Mines, Lunar Outpost developing technology for autonomous lunar excavation and construction Mines Newsroom
Why this Colorado excavation contractor refuses to call his staff “employees” Equipment World
Brač Island Project, Croatia University of Colorado Boulder
PHOTOS: Excavation of the Ninth Street Historic Park reaches the halfway mark RED. Relevant. Essential. Denver