NOTE 4 - COSTS AND ESTIMATED EARNINGS ON UNCOMPLETED CONTRACTS - Costs, Earnings, Billings, Uncompleted Contracts - (Details) - USD ($)	Jun. 30, 2018	Jun. 30, 2017
Notes to Financial Statements
Costs incurred on uncompleted contracts	$ 448,437	$ 1,030,675
Estimated earnings	309,248	999,433
Costs and estimated earnings on uncompleted contracts	757,685	2,030,108
Less: Billings to date	671,047	1,294,047
Costs and estimated earnings in excess of billings on uncompleted contracts	$ 86,638	$ 736,061