The Nenana daily news., 1918-10-01
HOT SPRINGS MINES
 YIELD GOLD AND TIN

ton until the valley filled up and flattened out and became a broad pasture-land, lush with grasses, moss, brush and trees. This pro- cess is clearly revealed by the gulley worn through the valleys center, during the present summer, by Mir. Howell's waste water.
 Alternate layers of muck and ice, of root-filled earth, and dirt-filled ice indicate that fully one half of the volume of the accumulation top ping the bedrock is congealed water and the remainder solidified mass of powdery silt that melts like sugar when water is applied and runs away, if not in solution at least in suspension and that the rush of the waters will carry away to the Panama river fully 90 per cent of the volume of the overburden. The fall from the hydraulic workings to the river is of so heavy grade that the silt will have no opportunity to be precipitated until it has passed the boundary of possible interfer- ence with his mining operations. MT. Howell estimates that it will cost him less than 10 cents per square foot of bedrock exposed to clean off this age-old glacial de- posit and to sluice out of the resi- due the twin metals that promise so much for the future prosperity of the region.
 Experience has proved that ap- proximately two pounds net of tin is recoverable from every square l foot of bedrock uncovered. Add to this the value of the gold which in this vicinity has been heretofore as high as S10 per square foot and even greater, and it may readily be estimated that the prospects of bonanza workings at Tofty Gas the camp is called) are very alluring to say the least.
 Assuming that only tin were to be found and that Howell's esti- mate of the expenses of recovery are correct, what marvellous results -.may be expected. From 1900, ,0OO square feet of bedrock, which is the area of 1000 feet square, at two pounds net of tin to the square foot, the product would be 2,OOO,OOC
 pounds of tin, whicH at S6 cents
 per pound would amount to S1,72O.-
 900, leaving the gold recovery en.
 tirely out of consideration And the
 cost of recovery at 10 cents De,
 square foot would be S1OO,OOO only
 But the experience of all the
 miners who have worked in this
 valley is that neither the gold nol
 the tin is ever found alone. In
 variably both occur together, g: though ground out of the self-samt vein, and the theory that both metal: : did originate in the same ledge ol chute is borne out by samples ot the tin ore in which particles ol l gold are plainly discernible.
 7 Prospecting for the source of thu : tin has been vigorously prosecuted : by number of persons, but well
 defined theory has been advanced , that the veins or ledges from whicl the metals came once lay as { l blanket above the present level o1 , the valley, and were ground ou therefore by action of the glacier ol : disintegrated as the result of som, other undefined physical phenomena Certain it is, and this fact ha ) been proved conclusively by tn, Keystone drill operations, that al certain well-defined limits on boti sides of the valley and at it's upper
 terminus the deposits cease both oi
 gold and tin. One hypothesis sug
 gests that the continuation of the
 ore bodies in which they originate will be found when bedrock is clean
 ed off by the hydraulic operations
 This hypothesis would present the
 possible continuation of the ore
 bodies to indefinite depths, and to
 promise tin mining operations there
 on a larUo coo1o e,