Earthquake.

[RedOak]

Just had a 3.1 earthquake here in southeast Ohio. It shook my shop. There was another earthquake two days ago.

My first thought was a nearby strip mine blasting contractor filled another void with ANFO.

[Klauss]

Wasn’t there one a few days ago as well?

[44044]

Shake, Rattle and Roll…

[RedOak]

There was a 'boom' simultaneous with the shake. That's why I thought it was an overloaded shot hole. I guess an air blast isn't normal with an earthquake. The USGS website shows it as an earthquake. It seems to originate around a wellpad where fracking is in progress. Same place the previous earthquake occured two days prior. Must be a fault in that area.

[Sanders]

A 3.1 is kind of high for blasting. Typically, blasting will register in the 2.0 range. We used to have to notify USGS before setting off the explosives they wouldn't record our blasting as an earthquake event.

Contrast that with the 2.something that was registered in my area with the epicenter very close to Epstein's ranch, just after he didn't kill himself. I'm sure nobody was blasting any hidden tunnels. We wouldn't be lied to, would we? Earthquakes are not common in my area.

[RedOak]

A 3.1 is kind of high for blasting. Typically, blasting will register in the 2.0 range. We used to have to notify USGS before setting off the explosives they wouldn't record our blasting as an earthquake event.

Contrast that with the 2.something that was registered in my area with the epicenter very close to Epstein's ranch, just after he didn't kill himself. I'm sure nobody was blasting any hidden tunnels. We wouldn't be lied to, would we? Earthquakes are not common in my area.

About a month ago, they set off a shot that blew rock everywhere with big-time airblast. The guy loadong the holes with ANFO wasn't paying attention to how much was being loaded. There was a large void in the rock that was filled. He needs to watch the tape measure or loading pole closer to see that the level is increasing.

[4thIDvet]

I don't know squat about earthquakes cept. what I see on earthquake movies. I guess faults of rock shifting is what causes the vibration? Now blasting will send vibrations outward through the area of the blast. So guessing further say two faults are hanging on by a thread ready to go their different ways.
A good size charge is set off and that was the straw that broke its back? Possible? I don't know maybe??

[4thIDvet]

About a month ago, they set off a shot that blew rock everywhere with big-time airblast. The guy loadong the holes with ANFO wasn't paying attention to how much was being loaded. There was a large void in the rock that was filled. He needs to watch the tape measure or loading pole closer to see that the level is increasing.

Best I can remember from my old blasting days is 6 feet of compaction cover is needed over your load to keep the blast underground. If the guy you speak of 'was not paying attention' that is what gets people killed in the job of blasting.
Best book I got from the man instructing me when I was a rookie was not one on how to blast. It was a good sized book on what NOT to do when blasting so yah don't kill yourself or anyone around you. Very interesting book on stupid preventable mistakes guys made that got them to visit Jesus a bit sooner than they should have. Whoops. 🙁

[aviator]

I'll take hurricanes over earthquakes any time.

[Sanders]

Best I can remember from my old blasting days is 6 feet of compaction cover is needed over your load to keep the blast underground. If the guy you speak of 'was not paying attention' that is what gets people killed in the job of blasting.
Best book I got from the man instructing me when I was a rookie was not one on how to blast. It was a good sized book on what NOT to do when blasting so yah don't kill yourself or anyone around you. Very interesting book on stupid preventable mistakes guys made that got them to visit Jesus a bit sooner than they should have. Whoops. 🙁

I just drilled the holes, then would sit up on a hill and watch the powder monkeys load them up, then set them off at 3 pm every day.

[Konstantin]

I just drilled the holes, then would sit up on a hill and watch the powder monkeys load them up, then set them off at 3 pm every day.

My dad used to drill holes for my grandpa. Grandpa was a powder monkey, he did all the blasting on South 14 and the road to Sandia Crest. My dad has a huge collection of fossils from Grandpa's blasting days. He started blasting at the uranium mines in Grants back in the day. When I was a little kid Grandpa and my uncle Paul didn't set fireworks off on Independence Day they played with dynamite.