OSBURN, Idaho -

For more than a century, mining has been the backbone of the Silver Valley. While the industry still thrives in some areas, there are now scars all over the Panhandle of broken dreams and forgotten riches; those scars could pose a serious danger for anyone who ventures into the mountains.

Evolution Mine triggered gold and silver fever in North Idaho in the 1880s, becoming the first lode-mining site in the ore-rich Coeur d’Alene Mining District. 

Today, the main shaft of the historic Evolution site just west of Osburn, Idaho, is a forgotten mining scar -- a dangerous and very accessible 12-foot diameter vertical shaft that may drop 300 feet or more into the Earth, just a short distance from busy Interstate 90.

Shown photos of the gaping hole this week, the executive of the private company that owns the 20.6-acre patented mining claim said he was unaware the shaft existed and promised immediate action to close the site near Terror Gulch. The mine hasn’t been operational for 70 years or more.

 “It clearly presents a danger to the public -- to hikers and hunters and anyone else who might venture up here,’’ said Clarence “Butch” Jacobson, a 71-year-old Mullan resident, as he stood at the site last week.  He discovered it while visiting 400 abandoned mining sites in North Idaho in the last three years.

He has lots of remaining options.

Just on federal land alone, government officials say there are 510 abandoned mine sites in the Idaho Panhandle. 

No one can estimate how many more potentially dangerous sites – like the old Evolution shaft – exist on private property in the region, but they are believed numerous.

With the increased popularity of spelunking, caving and geocaching, abandoned mine sites offer a particular attraction and potentially deadly hazards, experts say.

Since 2010, figures show at least 40 people have died in abandoned mines in the United States.  The last reported death in this region was in June 1995 when the Steve Novak, the son of former Spokane City Manager Terry Novak, was overcome by carbon monoxide and died while exploring an abandoned mine on Lake Pend Oreille.

As for the current Evolution site, two federal abandoned-mine experts who reviewed photographs of the old shaft said it clearly presents a danger -- one that would prompt them to take immediate action to close it if it was on federal land.  But federal agencies and local government officials apparently lack authority to order closures of dangerous abandoned mine sites on privately owned land.

Jacobson discovered the Evolution site a couple of years ago and revisited it last week with Spokane author and historian Tony Bamonte, who is researching a forthcoming pictorial book on the mining history of the Coeur d’Alenes.

 “I just can’t believe that hole is still there -- wide open with no protection for people or animals.  It’s very dangerous,” Bamonte said as he and three other men -- all in their 60s or 70s -- easily walked to the site. 

Also along, Kathy Plonka, a photographer with The Spokesman-Review, was attached to a safety rope as she took pictures, shaking her head at the apparent danger exposed by the shaft that drops straight down.  There were no signs, fencing or protective devices.  The owner of the property was identified from public records at the county courthouse.

Fred Bardelli, a retired high school teacher and local historian who also made the trek, said he remembers hearing about the abandoned mine from his late father, World Boxing Hall of Fame slugger Guido “Young Firpo” Bardelli, who would go on to be a legendary contract miner in the Coeur d’Alenes.

“I’ve known about this all my life,” he said.  “I remember a house was there when I was a kid in the late 50s.”

“The way it is now, anybody hunting or walking that ridge, especially at night, there definitely would be a possibility of them falling into that shaft,” Bardelli said.

While Bardelli claimed most long-time residents have known of “the Evolution” site for years, the current sheriff of Shoshone County and an executive with the company that owns the land both said they had no idea the open shaft existed.  Both agreed it poses a danger.

 “The issue here is it’s on private property,’’ Shoshone County Sheriff Mitch Alexander said last week.  “Is it dangerous?  Yeah, I suppose.  Anything can be a risk. Around this county, these kinds of holes are all over.”  Alexander said he would contact the property owner.

Dennis O’Brien, an executive with H.F. Magnuson & Co. and an officer of Coeur d’Alene Crescent Mining Co., listed on public records as the owner and taxpayer, said he hadn’t been contacted by the sheriff and was unaware of the issue.

 “I didn’t know there was an open shaft there,’’ O’Brien said, “and I’ve never been to the site.  I’ve been here since 1990 and there’s been no work done there since that time,’’ he said.

Shown a photo of the shaft opening and asked if it poses a danger, O’Brien said:  “Yeah, I would say it does present a danger, and we should develop some plan to get it flagged and get it closed as soon as possible.”

 “This is an old, inactive mine, and nothing’s been done up there in years,’’ he said.  “We weren’t aware of this hole.  Thanks for bringing it to our attention.” O”Brien later asked for directions so he and a contractor could visit the site and develop a closure plan. 

The company executive didn’t immediately say if he would order an inspection to see what might be at the bottom of the shaft before closing it.  Bamonte and Jacobson, both with lengthy backgrounds in law enforcement, said they believe an inspection would be essential before closure.