Colorado quarry reopens four years after rocks slides force shut-down
Pikeview Quarry, a century-old limestone quarry in Colorado Springs, has reopened four years after two massive rock slides forced it to shut down, according to a report from The Republic.
The first rock slide occurred in December 2008, when 2 million tons of limestone crashed down in the center of the quarry, forcing up a plume of dust. The second occurred in September 2009, when about 1 million tons of limestone fell and created a smaller plume of dust.
The quarry was monitored for several years using laser sensors and seismographs. Geologists and engineers also analyzed the area.
Experts have said the rock slides may have been caused by moisture build-up between the granite mountainside and the limestone covering it.
The quarry, which dates back to the 1900s, reopened earlier this year.
From our partners
MORE FROM Aggbeat Online
SUBSCRIBE & FOLLOW
- House of Representatives passes bill blocking EPA's new Waters of the U.S. rule400 Views
- The Labor Department is auditing MSHA for allegedly failing to collect penalty fines371 Views
- Cat introduces larger sizes of its Tier 4 Final articulated trucks358 Views
- Caterpillar intros 336F L XE hybrid excavator: smart pumps, boom work faster, burn less fuel (PHOTOS)279 Views
- Cat backs up claims of fuel efficiency with a guarantee233 Views