616 ANNUAL RECORD OF SCIENCE AND INDUSTRY. 



cious metals in the United States daring 1878 to have been 

 at least $85,000,000, made up of 



Gold $41,000,000 



Silver 40,000,000 



Lead _ 4,000,000 



Total $85,000,000 



NUMBER AND CAPACITY OF THE IRON AND STEEL WORKS 



OF THE UNITED STATES. . 



From the valuable " Directory to the Iron and Steel Works 

 of the United States," prepared and published by the Amer- 

 ican Iron and Steel Association, we are enabled to present the 

 number and capacity of the blast-furnaces, rolling-mills, steel- 

 works, Catalan forges, and bloomeries in every state and ter- 

 ritory, as corrected to September 1, 1878, to wit : 



Number of completed blast-furnaces G98 



Annual capacity of all the furnaces in pig-iron (net tons) 5,868,000 



Annual capacity of bituminous-furnaces in pig-iron (net tons) 2,587,000 



Annual capacity of anthracite-furnaces in pig-iron (net tons) . 2,281,000 



Annual capacity of charcoal-furnaces in pig-iron (net tons) 1 ,000,000 



Number of rolling-mills 340 



Number of single puddling-furnaces in rolling-mills (a double fur- 

 nace counting as two single ones) 4,463 



Number of puddling-furnaces in steel-works and bloomeries 51 



Total number of single puddling-furnaces 4,51 4 



Number of trains of rolls in rolling-mills 1 , 252 



Number of trains of rolls in steel- works of all kinds 05 



Total number of trains of rolls 1,347 



Annual capacity of all rolling-mills in finished iron (net tons) 4,461,000 



Annual capacity of all rail-mills in heavy rails (net tons) 1,972,000 



Number of Bessemer steel-works 11 



Number of Bessemer converters 22 



Annual capacity in ingots (net tons) 750,000 



Number of open-hearth steel- works 14 



Number of open-hearth furnaces 22 



Annual capacity in ingots (net tons) 100,000 



Number of crucible cast-steel works 38 



Number of steel melting-pots 3,400 



Annual capacity in ingots (net tons) 90,000 



Number of miscellaneous steel-works 8 



Annual capacity of same in merchantable steel (net tons) 22,000 



Number of steel-man ipulating works 23 



Number of Catalan forges (blooms from ore) 64 



Annual capacity in blooms and billets (net tons) 65,000 



Number of bloomeries (blqoms from pig-iron) 58 



Annual capacity in blooms (net tons) 65,000 



