All proceedings of the type herein authorized, which have been heretofore concluded in any court aforesaid, substantially consistent with the procedure herein authorized, and all unexpired leases of the kind specified, previously executed and delivered pursuant to each prior proceeding, substantially in conformity with the provisions hereof, are hereby declared valid, as effectively as if this act had been in force upon the date of each prior proceeding and lease.
W.S. 2-3-504