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Artificial-recharge experiments and operations on the Southern High Plains of Texas and New Mexico
Richmond F. Brown, Donald C. Signor
1973, Water-Resources Investigations Report 73-10
Experiments using highly turbid water from playa lakes for injection into the Ogallala Formation have resulted in greatly decreased yield of the recharge wells, Recharge of ground or surface water of good quality has indicated, however, that injection through wells is an effective method of recharging the aquifer. Water that...
Geology and mineral deposits of an area in the Departments of Antioquia and Caldas (Subzone IIB), Colombia
Tomas Feininger, Dario Barrero L., Nestor Castro, R.B. Hall
1973, Open-File Report 73-69
The Inventario Minero National (IMN), a four-year cooperative geologic mapping and mineral resources appraisal project, was accomplished under an agreement between the Republic of Colombia and the U. S. Agency for International Development from 1964 through 1969. Subzone IIB, consisting essentially of the east half of Zone comprises nearly 20,000...
Summary of seismic activity and its relation to geology and mining in the Sunnyside mining district, Carbon and Emery Counties, Utah, during 1967-1970
C. Richard Dunrud, Frank W. Osterwald, Jerome Hernandez
1973, Open-File Report 73-63
In the Sunnyside mining district, Utah, coal is mined under thick and variable overburden which is locally weakened by faults and other structural discontinuities. Stress changes and local stress concentrations produced by mining under these conditions often cause sudden and violent ruptures in the coal and surrounding rock mass. The...