https://www.usgs.gov/publications/a-reconnaissance-study-radon-levels-soils-developed-upper-cretaceous-pierre-shale-just
No abstract available.
reconnaissancestudyradonlevelssoils
https://www.usgs.gov/publications/geologic-control-severe-expansive-clay-damage-a-subdivision-pierre-shale-southwest
Shortly after construction of a subdivision in the southwest Denver metropolitan area in 1986, a portion of the subdivision built directly on steeply-dipping...
expansive claygeologiccontrolseveredamage