mantle exergen latrobe valley demo, page-5

Keep searching Blooms; have a look at the areas that Shaftsinkers drop their shafts. Mostly metalbase resource areas.....hard rock. Hardworking is slow ass stuff ....but when you have fracturisation in rock ( rotten rock) ; coal resource areas do generally have it; retention of the shaft walls becomes a whole different ball game. Might spring a couple of leaks too , considering its location.... What's the water table going to be at??? Remember also that this autoclave isn't about head pressure either; looks like what's going to happen its your shaft is virtually going to be a steam pressure cooker ( not head pressure) with high temps, 300 degrees....BM geo is going to throw a few awkward curve balls; have they done any geo research.....there is a lining issue to that shaft; it will need to be considerable , very considerable . BM is known for high sulphur...... Sulphur eats concrete fact

There is a shaft that's in potash area that you might be interested considering it ain't metal based; it wasn't used as a cooker either...that shaft is in Gremyachinskoye in Russia , another coal country ; link provided below

FWIW Shaftsinkers stay away from none metalbase resource areas... Although they have dipped their toes in the the area recently I believe..... They do have an office in the Isle of Man which is in the Irish Sea which divides UK and Ireland ..... UK and Ireland have larger coverage of Peat ( younger Lignite) and lignite They have NEVER sank a shaft through it; hard stuff and then meeting unstable point; a bit like pulling that stick out from under that big hard and heavy rock.

I like the way you plucked the cheap shaft lol!

http://us-cdn.creamermedia.co.za/assets/articles/attachments/17768_shaft.pdf