Statistics for occurrence #1 of “Pennsylvania” in entry iron-and-steel of Harper's Encyclopedia of United States History:
...own hematite yielded 2,869,785 long tons; magnetite, 1,727,430 long tons; and carbonate, 81,559 long tons.
Michigan produced the largest amount of red hematite, Virginia the largest brown hematite, Pennsylvania the largest of magnetite, and Ohio the largest of carbonate.
In 1890 the United States for the first time gained the lead among the pig-iron producing countries of the world, but lost it to Great...
| Max. Freq. | Min. Freq. | ||||||
|---|---|---|---|---|---|---|---|
| Entity | Corpus | Doc | Corpus | Doc | |||
| † | Pennsylvania (Pennsylvania, United States) | 12,690 | 1,788 | 2 | 0 | 0 user votes | |
† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.