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Rock samplingA method for sampling rock and other brittle materials and for controlling resultant particle sizes is described. The method involves cutting grooves in the rock surface to provide a grouping of parallel ridges and subsequently machining the ridges to provide a powder specimen. The machining step may comprise milling, drilling, lathe cutting or the like; but a planing step is advantageous. Control of the particle size distribution is effected primarily by changing the height and width of these ridges. This control exceeds that obtainable by conventional grinding.
Document ID
19740014956
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Blum, P. (Natl. Res. Corp. Cambridge, Mass., United States)
Date Acquired
September 3, 2013
Publication Date
October 12, 1971
Subject Category
General
Report/Patent Number
Patent Number: US-PATENT-3,612,030
Patent Number: NASA-CASE-XNP-09755
Patent Application Number: US-PATENT-APPL-SN-857241
Patent Application Number: US-PATENT-APPL-SN-611414
Accession Number
74N23069
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-3,612,030|NASA-CASE-XNP-09755
Patent Application
US-PATENT-APPL-SN-857241|US-PATENT-APPL-SN-611414

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