Leonardo Testi1 and Anneila I. Sargent California Institute of Te hnology, MS 105-24, Pasadena, CA 91125 Abstra t. We review some of the basi guidelines used to plan, exe ute and analyse multield observations at the Owens Valley Radio Observatory millimeter wave array. As a working example we dis uss our observations of the inner 50.5 50.5 of the Serpens loud ore. The results of our observation...

The relative proportions of metal residing in ore in the lithosphere, in use in products providing services, and in waste deposits measure our progress from exclusive use of virgin ore toward full dependence on sustained use of recycled metal. In the U.S. at present, the copper contents of these three repositories are roughly equivalent, but metal in service continues to increase. Providing tod...

The isotopic composition of mercury (Hg) was determined in cinnabar ore, mine-waste calcine (retorted ore), and leachates obtained from water leaching experiments of calcine from two large Hg mining districts in the U.S. This study is the first to report significant mass-dependent Hg isotopic fractionation between cinnabar ore and resultant calcine. Data indicate that delta202Hg values relative...

This study investigates an unusual source of environmental lead contamination - the emission and deposition of lead and zinc concentrates along train lines into and out of Australia's oldest silver-lead-zinc mine at Broken Hill, Australia. Transport of lead and zinc ore concentrates from the Broken Hill mines has occurred for more than 125 years, during which time the majority was moved in unco...

Information systems change initiatives often represent the single largest investment (and therefore risk) for large corporations yet there exist few management frameworks in the literature to help decision makers measure risk during this organization-wide change process. The Organization Risk Evaluation (ORE) framework has been developed based on the design science paradigm as a multicriteria, ...

Hydrothermal processes in the Earth’s crust can result in ore deposits characterized by high concentrations of metals with fractal or multifractal properties. This paper shows that stream sediments in the neighborhoods of ore deposits also can have singular properties for ore-mineral and associated toxic trace elements. We propose a new local singularity mapping method for assembling element co...

This paper presents an experimental study on the dissolution kinetics and solvent extraction of total gold from Ijero-ekiti (Nigeria) gold ore deposit by hydrochloric acid leaching followed by extraction with Tributylphosphate (TBP) in kerosene. The leaching investigation showed that the gold ore dissolution in HCl solution increases with increasing acid concentration, temperature and with decr...

Reporter gene analysis of two regions of the human factor VII (FVII) gene promoter (residues -658 to -1 and -348 to -1, where +1 is the start site of translation) in the mammalian liver-derived cell line HepG2 showed reduced transcriptional activity in the presence of oestrogenic factors. This effect was independent of promoter polymorphic haplotype. Similar analysis using a smaller region of t...

X-ray diffraction (XRD) can provide useful information about the composition of an ore sample in terms of quantification of crystalline phases and also amorphous content. XRD is also a powerful technique for studying substitutional solid solutions that can affect mining productivity, such as determining lattice bound aluminum in Goethite. Knowledge of the phases present can predict processing r...