This is our first hide so I hope you enjoy it. When I was a teenager a friend and I used to explore the caves and mines here in Dubuque. This is one of those spots where we found some old mines. No climbing or spelunking required. Some small trinkets for the kids are included.
MINING. Dubuque's oldest industry. 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. The bluffs were found to contain four layers. Beginning at the river's edge, these were clay soil, shale, galena limestone containing lead, and blue limestone.
Mining first successfully carried out by Native Americans brought many of the first white miners to this region of the country. Lead-bearing ore existed in such quantity that early mining techniques, while crude, proved successful.
Native Americans used exposed deposits called "float" to lead them to vast underground quantities of lead. The natives worked with a variety of tools, including sharpened sticks and antlers, long before white traders supplied them with shovels and picks.