20000831 Coal Mining History Resource Centre Covers aspects of the British Mining Industry from 1640 to 1978. Resources include a bibliography, a glossary of mining terminology from north-east England in 1841, and a database of colliery deaths covering the period 1850 to 1914. Identifies mines which existed in the years 1880 and 1945, and provides a list of mining disasters. In some instances location maps are supplied, with full details of the owner, name of mine, location, manager and under manager also being given. Gives details of the status, formula, and activity of each substance.
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In addition to circuits arranged by function, the archive includes component data sheets, software for circuit design, resistor codes, microprocessor information and specifications. ENGnetBASE Database of engineering information providing access to data, facts, figures, graphs, equations, illustrations and charts. Information in the database is critically evaluated by prominent authors in the field. Disciplines covered include General Engineering, Structural Engineering, Communications, Electrical Engineering and Digital Signal Processing. The service is subscription-based, with a short free trial available.