RE: Porvenir25 Oct 2020 18:20
Zoros, re. your post at 12:04, 25-1-2020.
Some good questions to which I will try to reply as best as I can as a geologist – like a fish to the bait!
MINE DESIGN. Jason Ward noted in a recent interview that he was happy to pass the Alpala project on to the mining engineers/engineers to develop onward, it now having progressed into their realm of expertise, rather than that of geologists. Your quite reasonable query is best answered by others with that expertise, so with that strong caveat in mind, a few observations and thoughts:
• The SOLG RNS’s contain location maps which show the drainage patterns of streams and rivers in the vicinity of all of their key geochemical targets (Cacharposa, Vino (like the sound of that!), Bartolo, and Targets 13, 14 and 16)
• The radial pattern around many of these suggest that they are located on or near ridges and hill peaks, apart from Vino and Targets 13 and 14 which appear to be located on hill slopes (lack of contours and place names on maps make it difficult to identify the specific locations on Google Earth to be able to more closely observe the topography and thus make more specific observations)
• An open pit is the most logical initial development configuration to consider conceptually for a near surface, commercial discovery on a hill top, which, depending on ore body orientation relative to topography, could minimise the strip ratio. Subsequent development, presumably by block caving accessed by decline from a lower elevation valley location is a logical configuration to consider for subsequent underground development.
DRILLING. It is logical to step outward incrementally from the known to the unknown, as SOLG are doing, rather than step too out far in large increments. So far, their drill plan indicates current exploration via a sequence of separate DDHs, in order to maximise intersection lengths to gather valuable geological information. It remains to be seen if, as they explore greater depths, they will avoid drilling through already explored ground by employing mother-daughter hole fan drilling patterns, by use of any type of directional drilling, such as motorised drill heads or even by old fashioned, tried and tested down hole wedging.
PROTECTED FORESTS. I noted in a previous post (26-10-2019) that the two most eastern concessions in the combined Porvenir-Nangaritza block lie entirely within a designated forest area, which adjoin Porvenir 1 immediately to the east (labelled “Nanga” in RNS figures). Part of the Target 16 anomaly straddles across the boundary into “Nanga” but unless the boundaries of that forest have been modified over the last year, then all the Porvenir targets appear to lie outside that protected area.