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Why is crystalline silica sand more likely to cause silicosis when used as an air abrasive blasting material than it is in its natural state, for instance, as beach or river sand?

Blasting makes the sand sharper.
Toxic residues from the blasted object mix with the sand.
Blasting reduces the size of the sand particles.
Blasting makes the sand round.

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Previous Quizzes from the Past Week

Monday, December 12, 2011
Who was recently elected Vice President of SSPC and therefore is in line to be President in 2013?

Friday, December 9, 2011
Which of the following coating types is an inorganic/organic hybrid?

Thursday, December 8, 2011
Why are chlorinated rubber and vinyl coatings no longer widely used in the U.S. as protective coatings?

Wednesday, December 7, 2011
A reduction in air abrasive blast nozzle pressure from 100 psi to 80 psi has what effect on the productivity of the blasting operation?

Tuesday, December 6, 2011
Which of the following attributes is not normally considered an advantage of vinyl ester coatings?


More previous quizzes
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