From a friend ! eric. --- On Tue, 6/23/09,
As per my information the mines were owned by a gentleman from Calcutta called Souza. Dempos were then into trading and shipping, possibly barges.Ore was dug out by human labour, no machinery. The Dempos entered the Souza company as managers and later became partners to form Dempo-Souza. The story is that they encouraged Souza to drink to his ruin, without getting drunk themselves.