000	00000nam 2200000zi 4500
001	9.867790
003	CaOODSP
005	20221107162415
006	m     o  d f
007	cr |||||||||||
008	190130s1959    onc     ot   f|0| 0 eng d
040	|aCaOODSP|beng|erda|cCaOODSP
041	|aeng|bfre
043	|an-cn---
086	1 |aM38-1/46-1959E-PDF
100	1 |aHorwood, J. L., |eauthor.
245	12|aA graphical determination of uranium and thorium in ores from their gamma-ray spectra / |cby J. L. Horwood.
264	1|aOttawa, Ontario : |bDepartment of Mines and Technical Surveys, |c1959.
300	|a1 online resource (iv, 24 pages)
336	|atext|btxt|2rdacontent
337	|acomputer|bc|2rdamedia
338	|aonline resource|bcr|2rdacarrier
490	1 |aMines Branch Research Report ; |vR 46
500	|a"December 1959."
504	|aIncludes bibliographic references.
520	|a"A graphical method is described for calculating the uranium and thorium contents of ores. The intersection of straight lines, each relating to a selected interval in the gamma-ray spectrum, makes possible a rapid estimate of the respective contribution of each series (uranium and thorium) to the total gamma activity. The departure from equilibrium in the uranium series and the effect of potassium are both considered. Spectrum curves were plotted for crushed ore samples. Count yields in a number of selected spectral intervals are given for natural uranium, natural thorium, purified uranium oxide (less radium and daughters), and potassium, to illustrate the construction of the linear equations. Typical solutions are shown for several types of ore samples"--Synopsis, p. i.
546	|aIncludes abstract in French.
692	07|2gccst|aMinerals
710	1 |aCanada. |bDepartment of Mines and Technical Surveys.
710	1 |aCanada. |bMines Branch.
830	#0|aResearch report (Canada. Mines Branch)|vR 46.|w(CaOODSP)9.855660
856	40|qPDF|s2.16 MB|uhttps://publications.gc.ca/collections/collection_2019/rncan-nrcan/m38-1/M38-1-46-1959-eng.pdf