Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Denver Harper"'
Publikováno v:
Environmental Monitoring and Assessment. 81:289-300
Two watersheds in northwestern Indiana were selected for detailed monitoring of bacterially contaminated discharges (Escherichia coli) into Lake Michigan. A large watershed that drains an urbanized area with treatment plants that release raw sewage d
Publikováno v:
Journal American Society of Mining and Reclamation. 2000:680-689
Publikováno v:
Journal American Society of Mining and Reclamation. 2000:690-694
Autor:
Greg A. Olyphant, Denver Harper
Publikováno v:
Journal American Society of Mining and Reclamation. 1998:283-288
Bedrock strata of the mining district of Indiana (Indiana Coal Mining District, ICMD) include numerous coalbeds of economic importance, together with underclays, roof shales, limestones, and sandstones of Pennsylvanian age. These are typically poor a
Publikováno v:
Journal American Society of Mining and Reclamation. 1998:289-298
Reclamation of Abandoned Mine Land (AML) Site No. 1087 (Midwestern) includes extensive use of coal-combustion byproducts such as fly ash and fixated scrubber sludge (FSS) as fill and cover materials. Prior to reclamation, a deposit of coarse-grained
Publikováno v:
Journal American Society of Mining and Reclamation. 1996:87-95
Autor:
Greg A. Olyphant, Denver Harper
Publikováno v:
Geomorphology. 11:261-272
As part of the feasibility studies at a large abandoned coal-mining complex, an elevated deposit of weathered pyritic refuse was monitored before and after treatment by a method referred to as direct revegetation . The monitoring was concentrated in
Autor:
Greg A. Olyphant, Denver Harper
Publikováno v:
Journal of Hydrology. 146:49-71
A statistical analysis of daily water-level changes in an abandoned coal mine indicates that precipitation affects the potentiometric level of the mine, independent of associated atmospheric pressure changes and changes in the water level of an overl
Publikováno v:
Water Resources Research. 27:2825-2833
A 500-m2 watershed on a deposit of coal refuse was instrumented for measurements of runoff and sediment yield and monitored for 15 months. The range of 42 storm period sediment yields was greater for the watershed as a whole (16 to 3,480 g m−2) tha
Publikováno v:
Environmental Geology and Water Sciences. 18:39-47
In part of a large abandoned mining complex, electromagnetic geophysical surveys were used along with data derived from cores and monitoring wells to infer sources of contamination and subsurface hydrologic connections between acidic refuse deposits