of the tun-nel is likely to be high, say $3,350,000, the metal liningbeing very expensive; 800 tons of bolts alone will be re-quired. The material is so fluid that it is practicallyimpossible to make an open cut even 60 feet deep forthe approaches.—Engineering News. AN IMFBOVED CHUBN. The… … CAMPBELLS CHUBN. Campbell, of Mancelona, Mich. The base is made intwo parts for convenience in shipping, and on the baseis secured an arm carrying at right angles a verticalspring plate, to the upper end of which is attached asupport for the cream-holding vessel. This supporthas handles at each…
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