Hydrogeology is now considered to be a core course in the curriculum of undergraduate geology programs as well as many fields of engineering. There is ongoing demand for persons with training in hydrogeology by consulting organizations, state and federal regulatory agencies, and industrial firms. Most of the employment in hydrogeology is in the environmental area. This is a book that will help prepare students for either a career in hydrogeology or in other areas of environmental science and engineering where a strong background in hydrogeology is needed.
Applied Hydrogeology is intended as a textbook for an introductory course in hydrogeology taught either at the advanced undergraduate level, or as a dual-level undergraduate/ graduate course. It is also useful in helping individuals who are preparing to take state examinations for professional registration as a hydrologist or hydrogeologist. It can be found as a reference book in the personal library of many working professionals. <...>

Applied Mineral Inventory Estimation presents a comprehensive applied approach to the estimation of mineral resources/reserves with particular emphasis on

The geological basis of such estimations

The need for and maintenance of a high-quality assay data base

The practical use of a comprehensive exploratory data evaluation

The importance of a comprehensive geostatistical approach to the estimation methodology.

Apatite is the most abundant of the phosphatic minerals and consequently it is of great importance to industrial chemistry as a raw material. In fact, so many modern technological developments depend upon the use of phosphorus-containing compounds that a f~irly complete list would have to include dentifrices, pharmaceuticals, phosphors, rust removers, additives for motor fuels, plasticizers, insecticides and other poisons, and friction matches. The large tonnages, however, are concerned with fertilizers, phosphoric acid and detergents (principally sodium tripolyphosphate). The basic raw material, phosphate rock or phosphorite, is a sedimentary rock of which the essential mineral component is ordinarily a carbonate fluorapatite. Annual production from mining operations in the U. S. increased during 1964-1968 from about 26 to 41 million short tons, and represented between 41 and 47% of world production <...>

In response to various technological and economic trends, geological survey organizations (GSOs) have increasingly relied on digital solutions to support the collection, maintenance, and distribution of subsurface geological data and information for use by increasingly diverse stakeholder communities. Raper (1989, 1991) provided some initial discussions of the applications and key concepts governing the development and applications of 3-D geological models. These efforts have been guided by the definition of the basic requirements for subsurface characterization and modeling first stated by Kelk (1991):