Archival objects in this container: Subsidence in Las Vegas Valley 1980-1991, Final Project Report, Nevada Bureau of Mines and Geology, 1991 Las Vegas Valley Water District (LVVWD) Production Wells No. 68, 73, 78, 82, 85, and 87 Borehole Lithology, reports and logs, undated LVVWD Department of Research, size samples, rock type, color, roundness, wells 71 and 72, logs, 1989 LVVWD Department of Research, size samples, rock type, color, roundness, wells 74, 78E, 84, 87, and 94, 1990-1994 Maps, notes and graphs of soil types in the Las Vegas Area, undated