Ringelmann Smoke Chart: Revision of IC 7718
Description:
Report issued by the Bureau of Mines discussing the Ringelmann smoke chart. This report serves as a revision to a previous report covering the Ringelmann chart. As stated in the abstract, "since instructions on its use are not shown on the recent edition of the chart, those included in this revision of the previous Bureau of Mines publication now are necessary complement to the chart. More detail regarding the use of the chart is included than was given in the earlier version" (p. 1). This repo…
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Date:
1967
Creator:
United States. Bureau of Mines.
Item Type:
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Report
Partner:
UNT Libraries Government Documents Department