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Computer Graphics Demonstration-area Coal Availability Studies.

Authors
Bitler-JR; Martin-JD
Source
NTIS: PB 267 923 :16 pages
Link
NIOSHTIC No.
10001770
Abstract
A computerized mapping system was developed by the Bureau of Mines to provide procedures for the rapid and inexpensive display of coal reserve data. Mapping system output consists of two types of maps, point distribution and contour (isopleth), which can be produced for data (coal analyses) associated with a point location (outcrop, drill core, or mine samples). These locations can be in the form of latitude and longitude or universal transverse mercator (utm) grid coordinates. The mapping area can range in extent from as small as a single county to as large as a multistate region. The mapping system utilizes programs developed at Harvard University, in addition to several modifications developed by the authors. The primary advantage of this system is that it enables the display of a rapidly changing data base and computerized map generation without the intermediate steps of digitizing and overlaying to produce base maps. The mapping system is applicable to any regional mineral reserve or resource study for which point location data are available. Included are example maps of the distribution of data points and contouring for sulfur content of the Upper Freeport coalbed in the western Pennsylvania demonstration area.
Publication Date
19770101
Document Type
IH; Information Circular;
Fiscal Year
1977
NTIS Accession No.
PB-267923
NTIS Price
A03
Identifying No.
IC 8736
NIOSH Division
WO;
Source Name
NTIS: PB 267 923
State
PA;
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