A5046647813- Soil and Unsaturated Flow
- Seedling growth and survival studies
- Soil Carbon and Nitrogen Dynamics
- Mine drainage and remediation techniques
- Groundwater flow and contamination studies
- Geochemistry and Geologic Mapping
- Radioactive element chemistry and processing
- Rangeland and Wildlife Management
- Tree Root and Stability Studies
- Aeolian processes and effects
- Mining Techniques and Economics
- Soil erosion and sediment transport
- Coal and Coke Industries Research
- Landfill Environmental Impact Studies
- Landslides and related hazards
- Collagen: Extraction and Characterization
- Photovoltaic Systems and Sustainability
- Iron and Steelmaking Processes
- Geoscience and Mining Technology
- Radioactivity and Radon Measurements
- Soil Geostatistics and Mapping
- Geotechnical Engineering and Soil Stabilization
- Coal Properties and Utilization
- Coal and Its By-products
- Geotechnical Engineering and Soil Mechanics
Schafer Corporation (United States)
1995-2020
Hydrosolutions (Switzerland)
2010
Solutions Inc. (Japan)
2010
Montana State University
1979-1981
University of California, Davis
1976
Abstract A new method of measuring shrink‐swell potential soil was developed using < 2‐mm sieved soil. Results obtained by this were significantly correlated with COLE determined on natural clods ( p 0.001, r 2 = 0.83). The is fast, requires little equipment, and should be a valuable test when cannot or equipment for the standard not available.
Abstract Minesoils from 1 to 50 years old in southeastern Montana were compared adjacent natural soils. Due their maninfluenced origin, minesoils had several unique morphological properties which made them difficult classify. Weakly consolidated rock fragments, common minesoils, acted part like soil supplying water and preventing root penetration. Low chroma mottles without the influence of a high table. Organic C content 0–10 cm depth reached levels found soils within 30 years, but will not...
Abstract Surface samples from 16 California soils with a wide range of swelling characteristics were studied. The coefficient linear extensibility (COLE) each soil was correlated other properties. Total clay content highly COLE ( r 2 = 0.868) while the ratio expandable clay/total (partial 0.454) also significantly affects swelling. percent is single variable best 0.907). Models established to predict properties selected literature and applied these soils. Results are compared measured...
Abstract A study of minesoil variability near Colstrip, Montana, showed that different kinds soils exist within mine areas, and individual soil bodies are large enough to map at a scale >1:10,000. Minesoils were more variable than natural the local (0–10 m lateral spacing), while landscape (>500 spacing). Fourteen families recognized in 300‐ha only two found on mined land. Variation properties was correlated with geomorphic variables related mining reclamation methods. Problems...
Abstract To draw the balance of anthropogenic 129 I input into European soils, concentrations and 127 in seven soils from Lower Saxony were analyzed down to a depth 250 cm. In comparison with pre-nuclear Ukrainian we detected significant I. Considering different time periods for it was possible assess dynamics sorption processes which dominate migration accumulation. Anthropogenic successfully used as tracer clarification trace elements soils.
Abstract Root distribution was studied in a soil having paralithic contact southeastern Montana. An abrupt change root abundance the most useful criterion for locating contact. The soft rock below is part of Tongue River member Ft. Union formation. indistinguishable from overlying texture, color, structure, and water‐holding capacity, but has bulk density 1.50 g/cm 3 hard whereas only 1.35 when dry. soil, which within 50 cm, supplied 86% as much water to plants during 1976 growing season...
A study was initiated in June 1976 at Colstrip, Montana, to determine root distribution l-to 4%year-old stripmine spoils and undisturbed soils of the area.Root determined using three methods: (1) soil profile description, (2) biomass, (3) radioactive tracer (%P).Results from all methods showed that old had substantially more roots below 100 cm than new or soils.Differences abundance were attributed species composition.Old dominated by half-shrubs, while grasses forbs.Root biomass upper 44%...
Saran coatings did not affect volume changes of large clods a high shrink-swell soil. For measurement one-third atmosphere bulk density, and the coefficient linear extensibility, should be coated with when between air-dry field capacity. The coating guards against disruption natural soil fabric yet will impede swelling. penetrates into outer pores clods. Therefore, for water retention measurements, samples Saran-coated near capacity moisture content.
Barrick Goldstrike Mines Inc. (BGMI) has developed a comprehensive closure planning, materials characterization and in-situ monitoring program for the of its mine waste facilities. Facility techniques use topsoil in-pit material to construct evapotranspiration (ET) cover systems reduce or eliminate infiltration meteoric water. One major facility at BGMI, AA Leach Pad (AA Pad) been closed. The Bazza Waste Rock (WRF), which will hold about 1.75 billion metric tonnes (mt) rock within an area...
The Barrick Goldstrike Mine is located in the Carlin Trend, about 20 miles northwest of Carlin, Nevada.The majority ore mined at from Post-Betze open pit, largest pit operation Nevada.Nevada law requires that water quality temporary or permanent reservoirs may develop pits be periodically tested.Pit prediction conducted to monitor and possible impact it have on human, terrestrial, avian life.Water has been analyzed three previous studies (BGMI 1991, Radian-Baker 1997, TRC 2000).The most...
Butte, Montana is the site of a world class copper deposit that has been mined nearly continuously since 1870's.Tailings deposits, legacy early mining practices, are abundant in floodplain Clark Fork River, which its headwaters near Butte.Tailings released by large-scale flooding 1900's form patchwork floodplain.Waters contact pyriterich tailings generally acidic and contain elevated copper, zinc, arsenic levels.Thinner deposits (e.g. less than 15 cm) fully oxidized have become naturally...
ABSTRACT: A comparison of 827 ha reclaimed minesoils in the Northern Great Plains with soils that occurred prior to mining showed an increase agricultural land capability classification at three five mines studied. Increased soil depth and reduced slope primarily accounted for improved capability. salt, sodium, clay content, erosion caused a decline on few mine sites. Overall, 45% mined lands were Land Capability Class IV or better. Only 34% same before equal quality. Reclamation practices...
The nexus of the agriculture–energy production–environment triad occurs nowhere in United States more acutely than on high plains Montana and Wyoming. Tongue River basin (TRB) Wyoming has over 27,242 ha (67,317 acres) irrigated land which supported cattle ranching farming operations for 120 years. lies axis coal-rich Powder geologic experienced coal bed natural gas (CBNG) development since 1999, along with surface mining 1972. is a principal tributary Yellowstone River, its headwaters...
Data on root weight, length, and surface area are useful in soil characterization, ecosystem description, studies of plant-soil interaction.Characterization systems is often thought to be so laborious inaccurate that little data collected.Root counts used soilsurveys evaluate abundance; but these not most applications where roots needed.An improved counting method provided count which correlated with measured weight (AW = 0.97 PW, r2 .85)where AW actual PW predicted weight.Counts were made a...