Kevin, As I suspected Gabriel Rains tinkering began well before the WBTS. He first used with success his sub-terra
torpedo against the Seminoles in 1840. Story goes that the mine killed one Indian. Undaunted the Seminoles waited in ambush and shot Rains when he came to examine his kill. at Ft McAllister 24 pounder land mines were widely used
Time Life Books vol. SHERMAN'S MARCH Atlanta to the Sea
pg 152-153
on a different note are you familer with the DENBIGH a runner from Galvaston to Havana Almost art-deco by desigh.