RE:Diavik A21 dyke relevance to R780No one said a slurry wall couldn't be built, but at what cost to mitigate problems? Yet another attempt by you (and quacky) at misdirection. First you got caught on the fact that the estimate for the mill is at least $500 million low, and now you deliberately don't address the cost of the dyke and slurry wall construction around R780 and the time to build it. It would take at least an extra season, and looking at the cost of slurry walls/meter, RPA's estimate is likely about $400-$500 million low there as well. When you add about a $billion to the capitial cost, that renders R780 not economic. Capice? If not, provided that your hero Dev can raise the money, wait for the pre feasibility study to better estimate costs.
sudzie191 wrote: https://www.reviewboard.ca/upload/project_document/EA1314-01_Diavik_A21_Dike_Design_Report_-_response_to_MVEIRB-IR-109.PDF
THere is a 200 page report by BGC engineering, the same firm RPA used to assist them in their PEA report to outline the preliminary design of the R780 dyke.
THere have been quite a few bashers here on the dyke.
Well A418 Diavik dyke in some places is in 35 meters of water!
THe just started A21 dyke will be about the same size as the R780 dyke, but also in deeper water.
Significance is that all the latest techniques for all 3 Diavik dykes, and even more importantly, a lot of the construction equipment used for A21 will become available for the R780 dyke, saving a lot of capital equipment costs.
R780 dyke will be in 3-10 meters of water, not 35 meters, 140 feet.
THe open pit will also be much less of a problem for ventilation air control radon and radiation management for the workers, plus open air much more preferred than working in the frozen deep down CIGAR Lake and McArthur River dark dungeons.
In leakage water from the dyke will have to be handled separately using drainage ditches/trenches, from water out of the blasting area, which will have to be treated to remove uraium rock particulate, filtering being the obvious.