Serum copper levels among quartz stone crushing workers: a ...
The present cross sectional study was carried out among 134 workers of quartz stone crushing units to assess the serum Cu activity among quartz stone workers without disease. Demographic and occupational details of the subjects were recorded on the predesigned proforma.
11.19.1 Sand And Gravel Processing
English units). Although no emission factors are presented for construction sand and gravel processing, emission factors for the crushing, screening, and handling and transfer operations associated with stone crushing can be found in Section 11.19.2, "Crushed Stone Processing." In the absence of other data, the
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Sep 01, 2010· In the Godhara region of Gujarat itself, about 10,000 workers work as contract laborers in quartz crushing units. However, due to increased campaigning against silicosis and efforts to eliminate silicosis, the ground realities have now changed. Fortified by this fact, the present study was carried out to compare the respiratory morbidities ...
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Even though observed over the cyclone dust separators indicated the Industrial Health 2011, 49, 221–227 PARTICULATES AND SILICA EXPOSURE AT STONE CRUSHING SITE 227 higher pressure than the suction capacity of the sys- sure to respirable quartz in …
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Serum copper levels among quartz stone crushing workers: a ...
The present cross sectional study was carried out among 134 workers of quartz stone crushing units to assess the serum Cu activity among quartz stone workers without disease. Demographic and occupational details of the subjects were recorded on the predesigned proforma. Standard diagnostic criteria ...
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CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Abstract: The purpose of this study is to describe the personal exposure to respirable dust and quartz and in stone crushing units located at west of Iran. A size of 40 personal samples and 40 stationary samples were obtained and analysis was done by X-ray diffraction (XRD).
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(PDF) Determination of Exposure to Respirable Quartz in ...
quartz and in stone crushing units located at west of Iran. A size of 40 personal samples and 40 stationary samples were obtained and analysis was done by X-ray diffraction (XRD).
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Determination of Exposure to Respirable Quartz in the ...
Aug 19, 2008· It is concluded from this research the particulate generated from stone crushing activities contain a significant amount of respirable particle. The amount of free silica in stone quartz is 85 to 97 percent that emission of particles effect to health workers. LEV has important effect in the removal of silica particles in stone crushing units.
12 LABORATORY SAMPLE PREPARATION
grinding and crushing (Dean, 1995). Decreases in water content are sometimes observed while grinding solids containing essential water in the form of hydrates, likely as a result of localized heating. (See Section 12.3.1.2 for a discussion of the types of moisture present in solid samples.)
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