Term: core (mining)
Definition:
Miners usually work but six hours at a time, consequently four pairs of men are required; the forenoon, from 6 A.M. to 12 M., from 12 to 6 P. M. & 6 to 12 & 12 to 6.
View pictures relating to mining at Wisconsin Historical Images.
[Source: "Glossary of Miners' & Mineral Terms" in St. John, John R. A True Description of the Lake Superior Country ... (New York, W. H. Graham, 1846).]
