Casgliadau Arlein

A blue card file containing notes relating to mining regulations. A copy of the notes made at the Conference on Mining Gear held at the offices of the B.E.A.M.A., on Thursday, the 22nd September 1921. The first page is a Metropolitan-Vickers Electrical Company Limited headed paper, yellow paper with black typed details. The rest of the file contains notes typed in purple ink on off-white paper.