| Show 0 preservation OF MINE TIMERS mine operators of the country can save fully a year by treating the timber used underground for props and decreasing the annual replacement necessary by decay from one third of the total amount in use to one thirteenth of the same amount in speaking of the saving in mine timber through preservative treatment W F shep in a new bulletin issued by tho the united states forest service says the estimated life of an untreated mine prop is approximately three years with a proper preservative treatment this life may be increased by approximately ten years giving a total life for the treated props of thirteen years all of the mine props both round and square in use in the united states contain approximately million cubic feet about forty per cent of this quantity or million cubic feet can be advantageously treated if no preservative methods were used the annual replacement of this forty per cent would amount to one third of million or approximately sixty seven million cubic feet of timber if they were all given a proper preservative treatment the annual replacement would be reduced to one thirteenth of million or approximately cubic feet hence by a proper preservative treatment of all mine timbers which can be treated advantageously an annual saving would result of approximately cubic feet equivalent to feet board measure or more than half of the present annual cut editorial note in this connection we desire to call attention to Aven arious boli as a mine timber preservative this not only preserves wood from decay but win will double the durability and increase the tensile strength of the wood avena rious is now being successfully and d profitably used by a number of the big mining companies companie s of this intermountain region the capital electric company of salt lake is the western representative of the company |
