530 ANNUAL REPORT OF THE Off. Doc. 



The production in 11)10 wa.s over one thousand times greater than 

 it was in 1859, and in value had jumped from f32,00fJ to |1 27,896,328. 



NATURAL GAS 



The production of natural gas of the United States in 1910 was 

 509,155.309,000 cubic feet ; its value was $70,75(5,158. The production 

 of this valuable fuel in Pennsylvania amounted to 120,866,729,000 

 cubic feet, valued at $21,057,211. 



In addition to the enormous production of her own, Pennsylvania 

 consumed over forty-two billion cubic feet drawn from other states. 

 It will be observed that the value of gas produced in Pennsylvania 

 was nearly double the value of the petroleum produced in the State 

 in the same period. 



IRON ORE 



The production of iron ores in the United States in 1910 amounted 

 to 56,889,734 long tons. Of this amount, Pennsylvania produced 

 739,799 tons as follows: 



Hematite, 846 tons; broAAn ore, 106,544 tons; Magnetite, 632,409 

 tons. The production of hematite in 1910 was but 16.4 per cent, of 

 the production in 1909. The brown ore production showed an in- 

 crease of 25,829 tons. The production of magnetite showed an in- 

 crease of 51,379 tons in 1910 over the production of 1909. 



The value of iron ore rained in Pennsylvania in 1910 was $911,847. 

 Minne-sota, Michigan and Alabama produce over 88 per cent, of the 

 total production of the country. 



Pennsylvania's quota was but 1.3 per cent, of the whole. 



With the single exception of New Jersey, Pennsylvania produced 

 more magnetite than any other state in the Union. This ore mined 

 at the Cornwall ore mine in Lebanon county formed 24 per cent, 

 of the entire production of the Unite-d States for that year. 



As an iron ore producing State, Pennsylvania is seventh in rank, 

 but in the value of product, it is outranked by eight states. 



ZINC 



Although there are many localities in the State at which zinc 

 blende is found, I find no return made of this as a commercial pro- 

 duct in 1910, from Pennsylvania. The New Jersey Zinc Company 

 has an extensive smelting plant at Palraerton, but the ores smelted 

 are mined in New Jersey. 



COPPER 



Several mines in Adams county are reported as producing copper, 

 while in Lebanon county, blister copper is produced at the Cornwall 

 iron ore mine. The production amounted to 740,626 pounds. There 

 were produced, in addition to this amount from all sources includ- 

 ing old slags, smelter cleanings, precipitates, etc., 186,734 pounds, 

 making a total production in the State of 927,360 pounds. If the 

 average price per pound (12.7c) be used as a basis, the value of the 

 copper production of Pennsylvania in 1910 was $117,774.72. 



