2007-01-032022-02-032007-01-032022-02-03https://hdl.handle.net/11124/6113Date scanned: 2002-05-13.USBM #51365; Figure 5 Dust sampling with midget impinger.Held in the Russell L. and Lyn Wood Mining History Archive, Arthur Lakes Library, Colorado School of Mines.Donor: United States Bureau of Mines.Two miners sample dust with midget impinger underground at an unidentified mine.Rights management statement available at: http://library.mines.edu/digital/rights.htmlMine safetyMinersScenes, undergroundUnderground miningStillImage