000 02247nam  2200433zi 4500
0019.870038
003CaOODSP
00520221107163020
006m     o  d f      
007cr nn|||||||||
008190315t19711972oncad   obt  f000 0 eng d
040 |aCaOODSP|beng|erda|cCaOODSP
041 |aeng|bfre
043 |an-cn---
0861 |aM38-1/250-1971E-PDF|zM38-1/250
1001 |aCochrane, T. S., |eauthor.
24510|aComparison of dust sampling instruments / |cT.S. Cochrane, G. Knight, L.C. Richards and W. Stefanich, Mining Research Centre.
264 1|aOttawa : |bDepartment of Energy, Mines and Resources, Mines Branch, |cOctober 1971.
264 4|c©1972
300 |a1 online resource (1 volume (in various pagings)) : |billustrations, charts, figures.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aResearch report ; |vR 250
500 |aCover title.
500 |aDigitized edition from print [produced by Natural Resources Canada].
500 |a"October 1971."
504 |aIncludes bibliographical references.
520 |a"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.
546 |aIncludes summary in French.
693 4|aDust sampling instruments
7001 |aKnight, G., |eauthor.
7001 |aRichards, L. C., |eauthor.
7001 |aStefanich, W., |eauthor.
7101 |aCanada. |bDepartment of Energy, Mines and Resources.
7101 |aCanada. |bMines Branch.
7101 |aCanada. |bMining Research Centre.
830#0|aResearch report (Canada. Mines Branch)|vR 250.|w(CaOODSP)9.855660
85640|qPDF|s4.78 MB|uhttps://publications.gc.ca/collections/collection_2019/rncan-nrcan/m38-1/M38-1-250-1971-eng.pdf