Parts of Johannesburg could explode or collapse: report

[BusinessTech]

Parts of Johannesburg could explode or collapse: report

Illegals mining has put several key Johannesburg landmarks at risk.

 

[BlackMamba]

Maybe old mines should be filled so that it will be hard for Zama Zamas to go in

 

[Drifter]

Filled with what?

 

[OCP]

Filled with what?

Criminals!

 

[3WA]

Filled with what?

Carbon monoxide

 

[Hamster]

Filled with what?

Builders foam

 

[wizardofid]

Builders foam

Like that would stop them, you can also just pump the old mine heaps back into the shafts, the ground water is already contaminated.

I guess if possible I would pump oodles of foam in and then use 100 foot quick dry cement and reinforcing at the entrances.

 

[Hamster]

Like that would stop them

Wasn't a serious response but now I'm wondering: even if it doesn't stop them it would delay them especially if you keep on refilling it.

Logistics, costs, scale and environmental impact aside...

 

[wizardofid]

Wasn't a serious response but now I'm wondering: even if it doesn't stop them it would delay them especially if you keep on refilling it.

Logistics, costs, scale and environmental impact aside...

+- 2000 liters covers about 16000 square feet, it comes in plastic bags as well, simply shake the bag about, cut it open and pour.