Russian standards PDF
Non-destructive testing. Optical methods. Technical endoscopes with measurement function. General requirements
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Brown coals, hard coals, anthracite, combustible shales and coal briquettes. Methods of sampling and preparation of samples for laboratory tests
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Anthracite. Method for determination of volatile matter volume yield
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Brown coal, hard coal, anthracite and combustible shales. Method for sampling of seam samples
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Brown coals, hardcoals, antracite and combustible shales. Method of sampling for exploatation tests
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Hard coals and brown coals. Method of sampling by boring holes
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