Jack Dunn:
“In 1877, a reconnaissance detail of U.S. army scouts and cavalrymen was sent to the Mule Mountains to search the area for renegade Apaches. What civilian tracker Jack Dunn found instead were signs of mineralization indicating the presence of lead, copper and possibly silver.”-https://www.discoverbisbee.com/history
“I am Jack Dunn and the year is 1877:
I have had many great adventures as a civilian scout for the United States military, but I do have to say today’s was one of the very best. I have been scouting for Lt. John A. Rucker ever since we were dispatched from Fort Bowie. It is May and already the temperatures are rising and getting mighty, mighty warm as we head toward the summer months in the southwest desert.
Well, anyhow, Lt. John A. Rucker and I are watering livestock at the spring in the Mule Mountains, a common watering hole for us weary travelers. We are standing in the rugged, desolate canyon, surrounded by limestone formations when I can’t believe what I see.
Green color in the limestone! Signs of mineralization! Could be copper, lead, silver and maybe even gold. What a great day!”-https://www.outdoorssw.com/gem-of-the-desert
George Warren:
“…George Warren was one of the first prospectors in Bisbee and Warren, the first planned suburb in Arizona, was named after him. He was born in 1835 in Massachusetts…
He learned the trade of prospecting…and when he grew older, he headed out to the Mule Mountains when Jack Dunn’s discovery of mineralization became known.
Jack Dunn filed the Rucker claim and asked George Warren to grubstake other potential claims as Dunn was too busy working with scouts tracking Apaches. Warren failed to do so and gambled away the grubstake. He found other investors at Fort Huachuca for prospecting but didn’t mention Dunn…”-https://bisbeemuseum.org/postcard_archive/2021-7-21-pc/