another possible use: in the days of mules hauling carts to surface in mines...the miner's would hang their tag on the cars they loaded for ID & count at surface.
looked through index's of trantow's lumber, 2nd edition, & edkins coal scrip, 4th edition, books and found only these that match S.C. & L. Co.
1. spring creek lumber co. -- spring creek, wv (greenbrier county) but no "&"
2. stearns coal & lumber co. -- stearns, ky ( McCreary county) too far away where found