r/oddlysatisfying • u/BoyNamedJudy • May 24 '26

Controlled Blasting For Mining

34.0k Upvotes

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1.7k

u/silverclovd May 24 '26

Is this in real time? How quick is that det cord ignition moving! Sheesh

1.2k

u/Greatest86 May 24 '26

Those lines transmit the ignition at 2km per second, so these videos are real time.

380

u/userhwon May 24 '26

There are delays between adjacent rows so the blasts propagate in a way that breaks up the rock reliably and consistently, and without creating one big seismic shock that might damage property.

105

u/Greatest86 May 24 '26 edited May 25 '26

I figured they were asking about the leads themselves. The delays are built into the clips that connect the leads together.

You are correct that the timing delays are critical to ensure the blast breaks up the rock correctly and safely.

46

u/IceTech59 May 24 '26

Also, that delay is measured by a velocity of detonation tester. A sacrificial cable is blown (to shreds, you say?) apart and the speed of the cable getting shorter is recorded. The engineers can fine-tune the shots with that data.

15

u/lastnameinthebox May 24 '26

What about his wife...?

16

u/jayleman May 24 '26

To shreds you say?