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| 1989 grain dust explosions stay low | 539 |
| November 2012 | December 2012 | January 2013 | February 2013 | March 2013 | April 2013 | May 2013 | |
| 1989 grain dust explosions stay low | 30 | 50 | 30 | 27 | 7 | 18 | 12 |
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| 1989Dust_Explosions.pdf | 302 |
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