Call for Technical Developments - Land Mines

This letter was sent by the Department of National Defence in 1943 in order to address the issue of land mines in enemy lands. This letter addressed various institutes with technically-trained professionals that the government believed could come up with a faster and safer method of removal.

The letter also stressed the urgency of this matter, stating that, "The lives of some of your relatives and friends may depend upon the effort that you exert."