We describe a scheme to locate personnel in a coal mine following a disaster. The method, while not yet tested, would require only that the trapped miner be equipped with a loop receiving device. Operating frequencies in the low audio range are called for.
No takes yet. Share an insight, caveat, or question.
James R. Wait (1971) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: