The said structures shall be erected as soon as a substantial foundation is obtained, and in no case shall a shaft be sunk to a depth of more than fifty feet without such structure.
52 P.S. § 70-726
The said structures shall be erected as soon as a substantial foundation is obtained, and in no case shall a shaft be sunk to a depth of more than fifty feet without such structure.
52 P.S. § 70-726