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Show Rapid Tunnel Boring Machine. There Iibb recently been Invented a machine for boring Into the rock and making tunnels In an extraordinarily extraordi-narily rapid way. In addition to the rapid openlnB of ground for tho more economical development of metalliferous metallifer-ous velnB, It will remove the necessity In many Instances to iirovldp outlets for the water. This machine, it Is claimed, will cut a hole eight feet In diameter, and make Ilve feet per hour. It Is claimed that It will cut from 25 to 80 lineal feet per day of 24 hours, llulletln fnternatlonal Finance Assocl-atlon, Assocl-atlon, Mexico. |