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10-Q
COMPUTATION OF EARNINGS PER SHARE
CERTIFICATIONS PURSUANT TO RULE 13A-14(A) UNDER THE SECURITIES EXCHANGE ACT
CERTIFICATIONS PURSUANT TO SECTION 1350 OF THE SARBANES-OXLEY ACT OF 2002
MINE SAFETY DISCLOSURE
Inventories Narrative (Details) - USD ($)
Jan. 31, 2017
Jul. 31, 2016
Inventory
Inventory obsolescence reserve
$ 720,000
$ 806,000