Note 4 - Property and Equipment: Property and equipment table (Details) - USD ($)	Apr. 30, 2015	Apr. 30, 2014
Details
Office Equipment	$ 66,194	$ 58,266
Auto and Trucks	949,097	929,042
Machinery and Equipment, Gross	7,415,898	11,987,404
Buildings and Improvements, Gross	10,172,060	10,303,529
Construction in Progress, Gross	536,365	1,284,199
Property, Plant and Equipment, Gross	19,139,614	24,562,440
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(7,054,044)	(9,624,082)
Property and equipment, net	$ 12,085,570	$ 14,938,358