Results: 1 - 2 of 2
Aug 31, 1983
Open File Report
… framework of Lower Cretaceous coal-bearing rocks in the Grande … framework of Lower Cretaceous coal-bearing rocks in the Grande … Framework of Lower Cretaceous Coal-Bearing Rocks in the Grande …
Feb 28, 1993
Open File Report
… oxidized form of lignite coal that is rich in humic acids. … their own pits and from a nearby coal mine in the Forestburg area. …