Buttermilk Mountain near the Aspen-Snowmass ski area in Colorado, one of the states where the government has given oil companies leases for demonstration projects for oil shale.
Buttermilk Mountain near the Aspen-Snowmass ski area in Colorado, one of the states where the government has given oil companies leases for demonstration projects for oil shale. Alan Solomon / Chicago Tribune / MCT
Buttermilk Mountain near the Aspen-Snowmass ski area in Colorado, one of the states where the government has given oil companies leases for demonstration projects for oil shale. Alan Solomon / Chicago Tribune / MCT

Using West's oil shale would pump up greenhouse gases

July 28, 2008 3:25 PM