Word: copper
(lookup in dictionary)
(lookup stats)
Dates: during 1890-1899
Sort By: most recent first
(reverse)
Geological Conference. Papers: Geology of Henry County, Missouri. Mr. C. F. Marbut; The Cretaceous of Colorado, Mr. F. P. Gulliver; The Copper Deposits of Ducktown, Tennessee, Mr. R. E. Dodge. Geological Laboratory...
Geological Conference. Papers: Geology of Henry County, Missouri. Mr. C. F. Marbut; The Cretaceous of Colorado, Mr. F. P. Gulliver; The Copper Deposits of Ducktown, Tennessee, Mr. R. E. Dodge. Geological Laboratory...
...roof will be of three inches of spruce, one inch of felt and a covering of copper. The floors will be of spruce and maple, and the walls will be plastered and hard finished. The woodwork will be of hard pine throughout. The building will be heated from the plant in Winchester Hall...
...first business telephone line erected was that between New York and Philadelphia. The lines were gradually made longer and longer until the present line between New York and Chicago, was completed. This line is 950 miles long, has 44,247 poles, and contains 826,800 lbs. of copper...
...perfect control is obtained. Mr. Burton has also discovered that when several metals are heated by the same currents, the softer are not fused more quickly than the harder; in other words, each metal calls for its appropriate amount of the current. Thus he is enabled to heat iron, copper, and brass all by one current...