Show i I I Invention Will I End Dangers of I II Mine me Explosions I Wattis Superintendent Demonstrates Demonstrates Demon Demon- strates strafes Spray Machine Before Experts Exper Experts Ex- Ex per I t I I An Invention that mine experts experts' soap will pu put t the kibosh on fires and explosions due duo to coal dust in mines j has been cr contrived by Will I J. J Reid Beld superintendent of ot the Lion Coal company's camp at Wattis The I which is a m slinging mud I tank built upon the truck of a a. mine t 4 coal car spraying the root roof rib and floor loor of with a fan tan In the the manner of whitewash has been de demonstrated demonstrated de- de before many prominent mining men members of federal and state mine commissions and has hasmet hasmet m met t with enthusiastic approval al It Itis Itis Itis is said Ito to be a great improvement In rock dusting methods which consisted consisted consisted con con- formerly of shooting dry dust upon the walls and trusting to the of the tunnel l sides to hold as an offset to the coal dust A screen near the to top of the t tank sifts the mud before it emerges from the spray the dust being thrown upon the screen and the water being washed Into over and through it b by action of the fan tan The force torce of ot tha th fans fan's movement also drives the mixture through the spray with such force that the tunnel Is whitewashed whitewashed whitewashed white washed th thoroughly roughly with a single passage of the machine progressing at the rate te of about 1500 feet teet per hour and leaving a thick coating of the dock dust after of the water has been by the air circulation system in the mine The rock dust being used by Mr Reid in his demonstrations conducted conduct conduct- ed in tn mine No 1 lis is an oil shale from the same hills In which the mine Is driven |