Cortez Mine is a large gold mining site. The mine comprises the Pipeline, Crossroads, and Cortez Hills open pit mines; the Cortez Hills underground mine. Cortez Mine is located in 100 kilometers southwest of Elko, Nevada. It is in the Crescent Valley which is between the Shoshone and Cortez Mountains. The Crescent Valley is a basin in the traditional Basin and Range setting of Nevada. Mineralization was achieved during Jurassic-Miocene periods. Lithology includes silty limestone in Silurian Roberts Mountain Formation; above this is Devonian Wenban Formation (Limestone). The Wenban Formation is the host rock of Cortez Hills deposit. The Devonian limestone is overlaid by Quaternary alluvium. Water is a precious commodity in Northern Nevada. At the mine site, groundwater is pumped from aquifers, which is required to make proper open pit and underground working conditions. The pumped water is reintroduced into the groundwater system via agricultural irrigation and rapid infiltration basins.
Read MoreCamp Lejeune Background U.S. Marine Corps Base Camp Lejeune was established near the city of Jacksonville, N.C, in 1942. In 1982, the Marine Corps discovered volatile organic compounds (VOCs) in several drinking water wells that fed into two of the eight water systems at the base. Leaking underground storage tanks, spills and drum disposal caused groundwater contamination. At the Tarawa Terrace area, groundwater contamination was also caused by solvent-disposal practices at ABC One-Hour Cleaners. The Agency for Toxic Substances and Disease Registry (ATSDR) conducts research regarding the groundwater contamination at Camp Lejeune. ATSDR is a federal public health agency of the U.S. Department of Health and Human Services whose mission is to serve the public by using the best science, taking responsive public health actions, and providing trusted health information to prevent harmful exposures and disease related to toxic substances. ATSDR website for Camp Lejeune study. Research List of Reports: Summary of the water
Read MoreEquations to calculate the properties of air Density of air (ρ) vs. Temperature (K) ρ = 360.77819 * T-1.00336 (R2=0.99997) Unit : Temp(K) and Density (Kg/m3) Kinematic viscosity (ν) of air vs. Temperature ν = -1.1555e-14 * T3 + 9.5728e-11 * T2 + 3.7604e-08 * T – 3.4484e-06 (R2=0.99997) Unit : Temp(K) and Kinematic viscosity (m2/s) Dynamic viscosity (μ) of air vs. Temperature μ = ν * ρ Unit : Temp(K) and Dynamic viscosity (Kg / m s) Temperature K = 273. + °C Molecular weight of air = 28.75
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