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Normas DIN – AENOR
DIN 21920-5:1994-11

DIN 21920-5:1994-11

Mine plans - Petrography - Part 5: Hard coal mining

Bergmännisches Rißwerk - Petrographie - Teil 5: Steinkohlenbergbau

1994-11 /Active
The document applies to the features of mining-specific mapping. It contains the required symbols, abbreviations, and terms to be used for symbolizing hardcoal and adjacent strata on large-scale mining-specific maps and plans as well as for macropetrological sections of seams.
Cards, Drawings, Flaws, Graphic symbols, Guidelines, Hard coal mining, Lettering, Lists, Mine surveying, Mining, Mining geology, Petrography, Plans, Representations, Seam coal, Shafts, Sketches, Symbols
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