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LEAD AND ZINC DEPOSITS OF IOWA. History of lead and zinc mining in Iowa crevices of Dubuque county. Lead is reported to have
LEAD MINING - Encyclopedia Dubuque. LEAD MINING. The principal attraction of the Dubuque area to the first white settlers. LEAD mining was carried on in the area as early as 1685 when Nicholas PERROT .
MINING. Dubuque is situated in what was called the Northwestern district including land in Iowa and Illinois. Much of the richest LEAD-bearing ore was found within a few miles of Dubuque.
HISTORICAL SKETCH OF MINING By the end of the Seventeenth century lead-mining ·in: the present Dubuque district had assumed considerable proportions
Mines of Spain State Recreation Area and E. B importance as an early lead mining and smelting venture Dubuque''s trading post, the mining areas
LEAD MINING. The principal attraction of the Dubuque area to the first white settlers. LEAD mining was carried on in the area as early as 1685 when Nicholas PERROT entered the territory.
Julien Dubuque’s Mines, Mines of Spain, is a historic district that contains a nationally significant concentration of more than 100 archeological sites associated with the mining of lead from 1788 to 1865. The district lies along the narrow creeks and in the limestone bluffs and rolling
Lead mining deposit report for "Level Mine" (#USGS10082028) in Dubuque County, Iowa.
MINING - Encyclopedia Dubuque. In a seven-month period in 1860, the Dubuque lead mines yielded four million pounds of ore with an estimated value of over $122,000.
- 1 - Lead and Zinc Mining in the Dubuque Area by Greg A. Ludvigson and James A. Dockal This small cave, along fish Creek valley, is an example