The geologic characteristics (ore mineralogy, geochemistry, host rock lithology, etc.) that economic geologists use to classify mineral deposits are key to understanding their environmental signatures. Mineralogic characterization and chemical analysis are among the many scientific tools that can be applied to mining-environmental prediction, mitigation, and remediation (Plumlee and Logsdon, 19...

After gaining considerable expertise in establishing and exercising waste management strategy by immobilization of high-level radioactive liquid waste (HLW) in borosilicate glass matrix followed by its interim storage, it is envisaged to focus on geologic disposal of radioactive waste packages. The multi barrier disposal system is considered one of the options for isolation of radioactive waste...

A commonly-used method in ore exploration is hydrogen peroxide ammonium citrate (HA) extraction, which has not typically been used waste rock characterization. In this study, the sulfide specificity and leaching of other minerals HA extraction was evaluated its performance compared with aqua regia (AR) for preliminary assessment harmful element mobility. Samples collected from several different...

Alphabetical by first author Investigating changes in arsenic speciation through the combination of in vitro simulated gastric fluid extractions and EXAFS spectroscopy Mining conducted throughout the state of California has left an environmental legacy of exposed mine wastes containing elevated levels of toxic metal(loid)s including arsenic (As), a known carcinogen. The relationships between sp...

I will start this treatise with a history of two major themes in data integration. In my opinion, the topic began with the major retailers in the 1990s consolidating their sales data into a data warehouse. To do this they needed to extract data from in-store sales systems, transform it into a predefined common representation (think of this as a global schema), and then load it into a data wareh...

In order to automate the scooping task, it is desirable that the resistive force acting on the bucket be obtained before the scooping is performed. The objective of this study is to derive theoretically the resistive forces acting on the bucket during scooping of piled rock fragments. First, the changes in the shape of the rock pile due to the penetration of it by the bucket are modeled. Based ...

In the half century of the nuclear age, the U.S. has accumulated some 30,000 metric tons of spent fuel rods from power reactors and another 380,000 cubic meters of high-level radioactive waste, a by-product of producing plutonium for nuclear weapons. None of these materials have found anything more than interim accommodation, despite decades of study and expenditures in the billions of dollars ...

This study is part of numerical simulations performed on an in situ heating test conducted by the French National Radioactive Waste Management Agency (Andra) at Meuse/Haute-Marne Underground Research Laboratory (URL) to thermal-hydromechanical behavior host Callovo-Oxfordian COx claystone quasi real conditions, through international research project DECOVALEX. The emphasis put pore pressure inc...

Discrete Fracture Network (DFN) is a modeling framework for fractured rocks. The core element the description of geological medium as network discrete fractures that can be either generated from statistical distributions or imported deterministic surfaces. It an alternative to continuum methods with both advantages easily integrating properties fracture networks, and not assuming any homogeniza...