Seismographs pick up explosion as big as 4.5 earthquake in area of Wyoming coal mine

May 4, 2012 WYOMING As Mexico was being jolted by a series of moderate-to-strong earthquakes the other day, Wyoming got into the earth-shaking act, too. The USGS recorded a magnitude 4.5 near Sleepy Hollow at 10:11 a.m. MT (12:11 p.m. ET). Turns out it was caused by mine blasting. The “Fake Quake of 2012” was ‘really an amplified echo of an unusually large mine blast,” about 17 miles south of Gillette, the Casper Star-Tribunewrites. A USGS geophysicist based in Golden, Colo., said the explosion actually registered as magnitude 3.0. Locals said they didn’t feel a thing. “The only question now is: who set off an explosion that big at 10:12 a.m. somewhere in rural Campbell County?” the paper wondered. An explosion at a coal mine northeast Wyoming was big enough to register on seismographs on the scale of a small earthquake. Some people in Gillette reported feeling the ground shake from 16 miles away. The U.S. Geological Survey recorded the blast at 11:11 a.m. Tuesday. The blast registered as large as a magnitude 4.5 magnitude earthquake but had the signature of a human-caused explosion. The Gillette News-Record reports using explosives is a routine part of remove dirt and soil at the coal mines where the blast occurred southeast of Gillette. The explosion happened in the area of Cloud Peak Energy’s Cordero Rojo mine. Mine explosions that register with such force are rare. Sheriff’s officials said they had not heard of any emergency at the mines. –The Republic
contribution Josh B.  
This entry was posted in Earth Changes, Earth Watch, Earthquake Omens?, High-risk potential hazard zone, Seismic tremors. Bookmark the permalink.

15 Responses to Seismographs pick up explosion as big as 4.5 earthquake in area of Wyoming coal mine

  1. This one may have been a mine explosion but there was an earthquake in the southwestern part of the state at about the same time of the mine explosion in the east-northeastern part of the state close to the blackhills… The one in the southwestern part of the state was measured at a 4.2 but was wiped off the map by usgs… Also I may add the aftershock that was measured at a 3.0 on the richter scale… The 4.5 so called fake-quake might be from a mine explosion but they can’t deny the 4.2 never happened because there was an aftershock


  2. ArieZ says:

    I’m calling bulls#%+…. Mine blast aren’t that big, look at the sizemographs during small underground bomb tests…

    I bet the signature in this blast is goinh to be similar to whatever false flag they are preparing…


    • Ghost Hacked says:

      Actually mine blasts do get pretty big, not sure about a 4 I Grew up in a mining town and then, you will hear the glasses in the cupboards rattle now and then. A large BANG, things shake and the rumble quickly fades away.


    • Stewart says:

      I agree. No way this was a mining blast. I’m thinking nuclear test underground


  3. Josh Baker says:

    I saw that as well. I also wonder if somehow the 2 are connected. Seismic activity through Wyoming leading to a gas release/explosion…

    Perhaps we do have to keep yellowstone in mind.


  4. Granny Bear says:

    Underground nukes are this big, and have a “man made” signature. Bunker troubles? Remember Virginia.


  5. mtnwolf63 says:

    “The U.S. Geological Survey recorded the blast at 11:11 a.m. Tuesday.”
    There’s that number again. “11:11”
    Mine blasting? Or did they just test something in a mine?


  6. Stewart says:

    Perhaps this was an underground detonation by the government.


    • Stewart says:


      What size bomb / explosive device would it take to create that magnitude “earthquake?” Normal mining equipment seems far fetched to say the least


  7. Rob says:

    Yeah, I heard(though I don’t know how this source got THEIR information) that the USGS said the “quake in the SW of the state was some kind of “echo in a mine shaft or tunnel of the mine blasting being done in the Easten side of the state” or something close to that. I gotta agree with the posters above who call BS on their excuses. Mines blast ALL the time & we don’t see 4.+ quakes pop up on the maps afterwards. What did they do, set off a metric ton of TNT or something? Come on now!


  8. Dan Sherwood says:

    Or there is another secret bunker project running behind schedule there for needing the big blast. (just saying) you never know.


  9. Deb says:

    CHEYENNE, Wyo. (AP) — Federal officials are accepting public comments through next month on Lost Creek ISR’s plans to build what would be the only in-situ uranium mine in southern Wyoming. In-situ mining involves dissolving uranium out of sandstone deposits and pumping the uranium solution to the surface. The solution then is processed into yellowcake.

    Here are some links on fracking:

    Click to access Hydraulic%20Fracturing%20Report%204.18.11.pdf

    Key words-AFTER work is completed…


    • Stewart says:

      Does anyone have any new info on this situation? It’s like a lot of other mysterious things. It’s reported and then the media sweeps it away and its never mentioned again. Something BIG had to happen to cause that reading on the ricter scale and it not be a earthquake


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