1. Analytical and numerical simulation of the steady-state hydrologic effects of mining aggregate in hypothetical sand-and-gravel and fractured crystalline-rock aquifers Author/Creator: Arnold, L. R. Publication/Creation: Denver, Colo. : U.S. Dept. of the Interior, U.S. Geological Survey, 2003 Format: Book Access & Availability: Loading
2. Analytical and numerical simulation of the steady-state hydrologic effects of mining aggregate in hypothetical sand-and-gravel and fractured crystalline-rock aquifers Author/Creator: Arnold, L. R. Publication/Creation: Denver, Colo. : U.S. Dept. of the Interior, U.S. Geological Survey, 2003 Format: Book Access & Availability: Loading
3. Hydrogeology of and potential mining impacts on strippable lignite areas in the Denver aquifer, east-central Colorado Author/Creator: Driver, Nancy E., author Publication/Creation: Lakewood, Colorado : U.S. Geological Survey, 1986 Format: Book Access & Availability: Loading