Dave From my student days at UBC, I worked on the ISCU discovery (porphyry on northern Van Island). Discovery was in 1967 and production started in 1972.
I suspect a number of deposits Doggett was discussing in his synopsis were actually found in the period you mention but were deemed the 2nd tier ones, while the first tier were the ones developed. I remember when ISCU closed in 1995, a BHP engineer said that were the deposit being assessed now (1995) it would not be economic. Ken -----Original Message----- From: SEGMIN <[email protected]> On Behalf Of David K Fountain via SEGMIN Sent: Thursday, February 7, 2019 11:15 AM To: [email protected] Cc: David K Fountain <[email protected]> Subject: Re: [SEGMIN] SEGMIN Digest, Vol 8, Issue 5 Ken, It is unfortunate that Prof. Doggett did not look back another ten years (55years) to get the real picture of the impact of low grade, large tonnage, open pit copper production, namely Bethlehem Copper, Brenda Mines, Newman/Bell, Highland Valley. Prior to the recognition in the 1960s of the potential for these type of operations in BC, copper production in Canada was focused in Quebec, Ontario, and Manitoba on underground massive sulphides. His main point is on the delay from discovery to profitable production. Again in the 1960/70s these timelines were shorter. As an “old timer”, it would be interesting for Prof. Doggett to move his start date back to 1963. David Fountain Sent from my iPad > On Feb 7, 2019, at 12:00 PM, [email protected] wrote: > > > > > Today's Topics: > > 1. Doggett RdUp Presentation on Porphyry Coppers in BC (Ken > Witherly) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Thu, 7 Feb 2019 08:41:36 -0700 > From: "Ken Witherly" <[email protected]> > To: <[email protected]> > Subject: [SEGMIN] Doggett RdUp Presentation on Porphyry Coppers in BC > Message-ID: <[email protected]> > Content-Type: text/plain; charset="us-ascii" > > Dear Colleagues > > > > There was a special session on porphyry coppers in BC at the RdUp last > week and a lead-off speaker was Prof Mike Doggett. The title of his > talk was "The Business of BC Copper" and he looked at the industry over the > last 45 years. > While most of us likely feel we ply our craft without needing to deal > with what Mike discusses, our opportunity to work largely stems from > other people making decisions to spend money to pursue the business > opportunities Mike outlines. Without these decisions, we would not have > clients. > > > > https://spaces.hightail.com/receive/mNfpAJqb8U/a2VuQGNvbmRvcmNvbnN1bHQ > uY29t > > > > At the AEMA conference in December, an industry pundit complained > geologists needed to be more aware of the economic factors which affect the > industry. > I'd say the same message applies to the geophysical community. > > > > Cheers/Ken > > > > > > Condor Consulting, Inc./Condor North Consulting ULC > > North Building 6400N > > > > The Condor Mini-Theater presentations return for 2019. > > The talk schedule will be distributed February 15, 2019. > > > > <http://www.condorconsult.com/> www.condorconsult.com > > > > -------------- next part -------------- An HTML attachment was > scrubbed... > URL: > <https://lists.geosoft.com/mailman/private/segmin/attachments/20190207 > /e7badef4/attachment-0001.html> > -------------- next part -------------- A non-text attachment was > scrubbed... > Name: image003.jpg > Type: image/jpeg > Size: 7535 bytes > Desc: not available > URL: > <https://lists.geosoft.com/mailman/private/segmin/attachments/20190207 > /e7badef4/attachment-0001.jpg> > > ------------------------------ > > Subject: Digest Footer > > ----------------------- > SEGMIN community mailing list service ([email protected]). > Change your personal options here: %(user_optionsurl)s Colleagues can > join here: https://lists.geosoft.com/mailman/listinfo/segmin > Archives: https://lists.geosoft.com/mailman/private/segmin/ > NOTE that <Reply> will reply to all members of the list. > > > ------------------------------ > > End of SEGMIN Digest, Vol 8, Issue 5 > ************************************ ----------------------- SEGMIN community mailing list service ([email protected]). Change your personal options here: https://lists.geosoft.com/mailman/options/segmin/ken%40condorconsult.com Colleagues can join here: https://lists.geosoft.com/mailman/listinfo/segmin Archives: https://lists.geosoft.com/mailman/private/segmin/ NOTE that <Reply> will reply to all members of the list. ----------------------- SEGMIN community mailing list service ([email protected]). Change your personal options here: https://lists.geosoft.com/mailman/options/segmin/archive%40mail-archive.com Colleagues can join here: https://lists.geosoft.com/mailman/listinfo/segmin Archives: https://lists.geosoft.com/mailman/private/segmin/ NOTE that <Reply> will reply to all members of the list.
