Analysis of 21 post-burn cores taken from the Hanna IV UCG site allows 96 m (315 ft) of overburden to be subdivided into four local stratigraphic units. The 7.6 m (25 ft) thick Hanna No. 1 coal seam is overlain by a laterally discontinuous, 3.3 m (11 ft) thick shaley mudstone (Unit A') in part of the Hanna IV site. A more widespread, 30 m (90 ft) thick well-indurated sandstone (Unit A) overlies the A' unit. Unit A is the roof rock for both of the Hanna IV cavities. Overlying Unit A is a 33 m (108 ft) thick sequence of mudstone and claystone (Unit B), and the uppermost unit at the Hanna IV site (Unit C) is a coarse-grained sandstone that ranges in thickness from 40 to 67 m (131 to 220 ft). Two elliptical cavities were formed during the two phases of the Hanna IV experiment. The larger cavity, Hanna IVa, is 45 x 15 m in plan and has a maximum height of 18 m (59 ft) from the base of the coal seam to the top of the cavity; the Hanna IVb cavity is 40 x 15 m in plan and has a maximum height of …

Annual report of the Rio Grande Compact Commission describing goals and activities during their annual meeting and the previous year as well as tabular data and other statistics related to the management of the Rio Grande River.

The following appendix contains petrographic photomicrographs of uranium anomalies in Waterloo Gulch, Colorado.

Report detailing areas with anomalous geochemical characteristics indicative of mineral occurrences or deposits that have been identified using statistical and cartographic techniques developed during the National Uranium Resource Evaluation (NURE) program.

Tables presenting statistics for reconnaissance, detailed, and combined stream-sediment data derived from samples collected from the Mt. Harvard 15-minute quadrangle.

The study was conducted to demonstrate the applicability of National Uranium Resource Evaluation geochemical and geophysical data required

Maps showing the locations of samples collected from the Mt. Harvard 15-minute quadrangle along with the associated National Uranium Resource Evaluation (NURE) Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) and Aerial Radiometric and Magnetic (ARM) survey data (see page 1 of report).

Tables presenting the results of stepwise multiple regression analysis applied to the stream-sediment data sets for the Mt. Harvard 15-minute quadrangle, using uranium as the dependent variable.

Tables presenting factor analysis of reconnaissance, detailed, and combined stream-sediment samples collected from the Mt. Harvard 15-minute quadrangle.