Gordon Casserly, Life in an Indian Outpost
“ Climbing down from the machân he inspected the booby trap. At a signal, men inside the wall cut the creepers supporting the outer end of the bamboo platform which fell on its hinges and sent an avalanche of rocks into the nullah below.As soon as it was dark we went out on to the gallery projecting over the river-bed. From it cords led to bombs buried in the sand and piled around with stones. They were made of bamboos filled with powder and fitted with a rifle cartridge so arranged that, on pulling the cord, a rock fell on a nail which struck the cartridge-cap and exploded the bomb. ”
