The first 10' was normal digging till we hit 4' of bricks and huge rocks weighing excess of 200 lbs. Others would gave up, not me. I pulled out the sledge hammer and broke apart the material into manageable pieces. I figure it was the founditaion of this building they collapsed down into the hole. Anyway all of a sudden dishes, bottles, shoes, rellics from 1890s s.. The mass of the contententens dated to 1870's.