Fellow Investors,
Here is some more mining knowledge that can not just be Googled up with key words. LOL
This is my statement explaining some fundamental underground mine design concepts.
/ Second wall rocks or contact zones are not where any sane mining engineer would plan his underground development. This is in part for the reason you state and in part because all contact zones are unstable to a certain degree. You plan your development so that access to the ore zone cuts across these zones perpendicularly. This development is planed in the competent waste rock and from the footwall side of the ore body. Once again the waste rock they describe is quite competent./
The competent waste rock would be the Andesitic Volcanics that comprise the footwall side of ARU's FDN deposit. This type of rock is easily mined through and quite competent.
This is sageyrain's response which is totally meaningless and off topic because he could not Google an answer for the above.
/You should look up the word epithermal. You obviously don't know what it means and are too lazy to look it up./
Here are some more totally unknowledgable replies to my statements.
Yes your tiny access cuts across the unstable contacts, but, unfortunately, your ore body, everywhere, has contacts. And as this will be bulk-mined, you will also be dealing with constantly changing internal mine face contacts. All of which has to be kept stable while you are mining and this is where your major cost comes in, not the friggen access. Interesting that I have to digress into this mining 101 biz so that I can explain to the laymen that you are using clever diversion again, and I am still not sure that you even know what you are talking about. Oh that’s right, its because I am a laymen, right, LOL./
/Also, this is a large mine. The access ramp cost will be very small compared to the overall cost of ground control while mining./
First I talked about underground development which comprises all the underground excavations. Some of these are ramp, storages, underground garage, draw points, shaft, ore&waste pass chutes, remucks, ventilation shafts ect, ect, ect. In all these cases the ground support is installed as part of the drill, load, blast, muck out and support cycle. The support part of this cycle represents about 1/8 of the time and a negligible cost when conventional point anchor rock bolt are used. Therefore your statement is totally laughable.
/Yes your tiny access cuts across the unstable contacts, but, unfortunately, your ore body, everywhere, has contacts./
This is another totally unknowlegeable reply to my post. First the ore body has only 2 contacts and that would be the hanging wall and footwall contacts between the ore body and surrounding waste rock. duh
/And as this will be bulk-mined, you will also be dealing with constantly changing internal mine face contacts. All of which has to be kept stable while you are mining and this is where your major cost comes in, not the friggen access. Interesting that I have to digress into this mining 101 biz so that I can explain to the laymen that you are using clever diversion again, and I am still not sure that you even know what you are talking about. Oh that’s right, its because I am a laymen, right, LOL./
This is once again another laughable statement. The sublevels that are used as drill zones for bulk mining are part of what is called development. These sub drifts are bolted up as part of the drill and blast cycle as already explained and do not represent an overall major cost in the mining cycle.
The central portion of FDN will no doubt employ some underground bulk mining methods. However the smaller veins to the south will us more selective conventional mining methods.
The bulk mining production stopes as they are called are not supported as they are blasted out and no one ever enters them. Once a production stope or block has been blasted out and mucked out of ore it can be supported depending on its proximity to other mine workings. This support consists of waste rock backfill from the development headings or in more strategic locations cemented paste. This backfill once again represents a small portion of the overall mining costs.
In short it is interesting that you do not even know basic mining 101 and thus I no longer even consider you a layman.
Fellow investors, you see it is easy to Google then copy and paste a reply. It is far more difficult to understand what it is you are copying. This is fine as long as your readers are as unknowledgeable as yourself. It is laughable to someone such as myself with 20 years experience.
The rest of Sageyrains post was just as laughable and as I feel like it, I may point out some more of his mistakes, evasions and suppression of the facts.
Sageyrain I am still waiting for the reply to my questions.
It was a large mistake on your part challenging me in one of my fields of expertise.
Regards,
F.F |
