00000nam 2200000zi 4500 9.870038 CaOODSP 20221107163020 m o d f cr nn||||||||| 190315t19711972oncad obt f000 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn--- M38-1/250-1971E-PDF M38-1/250 Cochrane, T. S., author. Comparison of dust sampling instruments / T.S. Cochrane, G. Knight, L.C. Richards and W. Stefanich, Mining Research Centre. Ottawa : Department of Energy, Mines and Resources, Mines Branch, October 1971. ©1972 1 online resource (1 volume (in various pagings)) : illustrations, charts, figures. text txt rdacontent computer c rdamedia online resource cr rdacarrier Research report ; R 250 Cover title. Digitized edition from print [produced by Natural Resources Canada]. "October 1971." Includes bibliographical references. "This report describes many comparisons between dust sampling instruments. These narrow down to the very wide range in ratio of dust concentrations indicated by any two types of dust sampling instruments in different dust clouds and, therefore, the need to consider physiological factors in applying dust sampling instruments to assess health hazards. Changes in design that are apparently minor can have a large effect on the respirable dust concentration indicated by a sampler that has an aerodynamic size selector"--Summary, page i. Includes summary in French. Dust sampling instruments Knight, G., author. Richards, L. C., author. Stefanich, W., author. Canada. Department of Energy, Mines and Resources. Canada. Mines Branch. Canada. Mining Research Centre. Research report (Canada. Mines Branch) R 250. (CaOODSP)9.855660 PDF 4.78 MB https://publications.gc.ca/collections/collection_2019/rncan-nrcan/m38-1/M38-1-250-1971-eng.pdf