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Osage Asphalt Mine
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Headframe Hunters
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PostPosted: Sun Mar 05, 2017 4:25 pm    Post subject: Osage Asphalt Mine Reply with quote

I dunno if anyone here has been in this one; it's behind the ready-mix plant in Osage Beach. It was an aggregate mine owned by Osage Asphalt, Inc. that seems to have closed around 1984.


There are three entrances on the north side of the face; all are covered with corrugated metal siding. The siding has come loose on one; I'm 6'0" 260lbs and barely fit through the man-squeeze between the two-by-fours holding the whole thing up. This is a view of the inside of the gate.


One of the rooms is walled off with cinder blocks; it's empty except for PVC pipe, buckets, and miscellaneous junk. It was probably the underground shop and storeroom for the mine.


I thought that this 'DANGER - EXPLOSIVES' sign was worthy of a photo op, with obligatory face hiding.


I believe that the drifts here are approximately 20 feet high by forty feet wide. It seems like someone wanted to use the mine as a warehouse, based on pickup tire tracks and 'CONTROL STORAGE' being painted on the gate, but it didn't pan out.


This is the gnarliest pillar failure I've ever seen. The pillar intserects a pocket of clay, which dissolved once it got wet. As you get towards the eastern side of the mine, the back (roof) conditions get sketchy. There are a bunch of rock falls and mangled roof bolts, and some installed roof bolts that backed out almost a foot from stresses. In addition to the three entrances on the northern pit wall, there is a fourth on the eastern wall. The workings there seem to be under the ready-mix plant, and are slowly failing from the weight of the plant, its stockpiles, and the massive heap of waste concrete. We didn't enter them for obvious reasons.

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mindwaave
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PostPosted: Sun Mar 05, 2017 7:46 pm    Post subject: Re: Osage Asphalt Mine Reply with quote

I hadn't heard of this one before, thanks for sharing! We've got some mines closer to St. Louis if you're ever in the area. Do you go to S&T? Cause you should definitely check out the Rolla Thread if you live there.
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Headframe Hunters
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PostPosted: Sun Mar 05, 2017 8:35 pm    Post subject: RE: Osage Asphalt Mine Reply with quote

Yep, I'm at S&T. I've done some poking around near STL, particularly near Festus and Pacific. We reconnoitered the Glencoe underground mines- the south mine is being worked on; there's an office trailer in the southernmost entry and at least one security camera, and I heard a trackhoe operating inside. The north mine may be GTG. The yellow tubular-steel gate on the east side of the road is not actually locked; you can drive a vehicle right by it. It would seem as if a house may be built on the spot, across the creek from the mines, but it makes a good place from which to observe the mines. All my recon was done with binocs from 100-200yds+ away.

We also did the Pacific thing when driving back from visiting family friends in Indiana. The entries behind the car wash, specifically. There's enough crap falling off the back there that I didn't feel safe doing it without my PPE, which I had left back in Rolla, so I ran out after getting maybe a hundred feet in. The sound of crackling St Peter sandstone is terrifying when it makes up the roof over your head!! Shocked Shocked

Which mines did you particularly have in mind? I'm trying to coordinate a trip to a multi-entry underground copper mine at an undisclosed location. Private property; I'm trying to work with one of the landowners.

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Chris
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PostPosted: Thu Mar 09, 2017 7:03 am    Post subject: Re: Osage Asphalt Mine Reply with quote

Thanks!
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Headframe Hunters
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PostPosted: Tue Mar 14, 2017 9:29 pm    Post subject: Re: Osage Asphalt Mine Reply with quote

I just wanted to post a link to YouTube video of this mine. The video quality is a bit iffy since the huge drifts made proper lighting completely impossible.

https://www.youtube.com/watch?v=hCk08ACbN_0

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PostPosted: Mon May 22, 2017 12:32 am    Post subject: Re: Osage Asphalt Mine Reply with quote

Nice find! I'll have to look into that the next time I'm up that way.
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