Results: 1 - 3 of 3
Dec 31, 1990
Open File Report
… exploration and coal quality data needs to be collected … be excluded. Based on existing data, potential surface-mineable … the remaining map area, little data is available and the coal …
Nov 22, 1995
Open File Report
… (Zr). Variations in the data are illustrated by a figure … River, show multiple till units. Data from a section with three till …
Dec 31, 1971
Earth Sciences Report
… map series are, in actuality, a data storage file. On the other …