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Jun 22, 2010 | 12:47 PM

#316

glruff

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From: DELAWARE, The First State

Its a whatchamacallit! And that's my final answer.

Jun 22, 2010 | 12:48 PM

#317

bpounds

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From: Whittier, CA

BTW, I believe I know the what and the why, but not the how.

Jun 22, 2010 | 12:49 PM

#318

SteveBricks

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From: Lakewood, Ca.

Christmas came early this year for the stolen truck guy. Good story.

Jun 22, 2010 | 12:53 PM

#319

SteveBricks

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From: Lakewood, Ca.

Quote:

Originally Posted by bpounds

and how it works?

Hydraulically

Jun 22, 2010 | 12:59 PM

#320

bpounds

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From: Whittier, CA

Quote:

Originally Posted by SteveBricks

Hydraulically

Pneumatic I think.

They are connected to these outhouses by hoses. I think there must be compressors inside.

These all showed up on the mountain within the last year.

Jun 22, 2010 | 01:02 PM

#321

glruff

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From: DELAWARE, The First State

No idea unless its some sort of snow making gizmo, lol

Jun 22, 2010 | 01:05 PM

#322

SteveBricks

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From: Lakewood, Ca.

Avalanche cannon?

Jun 22, 2010 | 01:07 PM

#323

glruff

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From: DELAWARE, The First State

Has to be something to measure the earth's movement don't you think?

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Jun 22, 2010 | 01:12 PM

#324

bpounds

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From: Whittier, CA

Quote:

Originally Posted by SteveBricks

Avalanche cannon?

I believe this is correct. I'm still searching for more info. But I believe they are creating sonic waves using compressed air to start avalanches in a controlled manner. This would be a modern alternative to shooting howitzers at the mountainside from down below. There are still signs up there warning people that exposives may be used. I think duds left over into the summer is the biggest concern with the projectile method.

If you are down in Lee Vining looking up at the slope directly behind town, you can see the threat.

Jun 22, 2010 | 01:13 PM

#325

bpounds

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From: Whittier, CA

Quote:

Originally Posted by glruff

No idea unless its some sort of snow making gizmo, lol

Making snow is the least of their concerns in this location.

Jun 22, 2010 | 01:15 PM

#326

SteveBricks

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From: Lakewood, Ca.

BTW Bill...cruised by your place on Sunday evening but, as you know, you weren't home.

Jun 22, 2010 | 01:18 PM

#327

bpounds

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From: Whittier, CA

Quote:

Originally Posted by SteveBricks

BTW Bill...cruised by your place on Sunday evening but, as you know, you weren't home.

I was somewhere else.

BTW, I don't think we need to read my strategy. I have an issue that is going to have to be repaired. At least I'm pretty sure. Doesn't really matter what current strat.

Jun 22, 2010 | 01:24 PM

#328

SteveBricks

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From: Lakewood, Ca.

Quote:

Originally Posted by bpounds

I have an issue that is going to have to be repaired. At least I'm pretty sure.

Did you see some numbers that weren't good?

Jun 22, 2010 | 02:23 PM

#329

bpounds

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From: Whittier, CA

Sorry, Steve. I headed off to lunch. I will PM you.

Jun 22, 2010 | 04:09 PM

#330

bpounds

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From: Whittier, CA

Quote:

Originally Posted by SteveBricks

Avalanche cannon?

Quote:

Originally Posted by bpounds

I believe this is correct. I'm still searching for more info. But I believe they are creating sonic waves using compressed air to start avalanches in a controlled manner.

Okay!!! Found it.

Believe or not, those things are called Gaz-Ex.

Gazex, avalanche equipment, avalanche safety - TAS

I was essentially correct, except that they add propane to the oxygen to create an actual explosion that is directed at the snow plane. I couldn't see how they could get enough shock wave from simply compressed air. The propellant gas explains it. It also explains why the hoses leading from the outhouses to the cannon are yellow colored, which is code for buried gas piping.

I didn't see what I would recognize as an igniter, but it must be hidden in the cannon barrel.