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INVENTORY (Tables)
9 Months Ended
Dec. 31, 2018
Inventory Disclosure [Abstract]  
Inventory balances by category
Inventory balances by category were as follows:
 
December 31, 2018
 
March 31, 2018
Finished products
$
36,365

 
$
13,940

Parts and supplies
3,421

 
1,222

Inventory
$
39,786

 
$
15,162