Here's a refresher then with relevant post links! tangs is...

Here's a refresher then with relevant post links!
tangs is claiming $41mil for Opex for Oposura.
Where is his reasoning? There is none!
That’s a flat amount whereas Opex is expressed in cost per tonne. This is just for starters.
I’m wary here because @tangs apologised for misreading the figures to refer to million when they referred to metric.

Post #:
30137234

So I’m concerned that only relevant figures be used and claims are fully justified.

In summary, the capex for San Felipe is around $36 million, to build a mine, mill and infrastructure.

The capex for Oposura is around $40 mil.
see the link from recent report with salient facts
http://azureminerals.com.au/wp-content/uploads/2018/02/180215-Roadhouse.pdf

Based on a comparison mine, San Felipe Opex will be around open pit waste rock mining cost of $2.20/tonne, mineralised mining cost of $2.80/tonne.
I have explained this reasoning before, so for completeness here is the scenic route:

Post #:
30080864
This is the San Felipe mine, a zinc, lead and silver deposit which has a PEA (Preliminary Economic Assessment used in the Canadian system) and was owned by Santacruz Silver Mining company. It was bought by Americas Silver Corp which paid $15mil. http://www.americassilvercorp.com/s/NewsReleases.asp?ReportID=781197

Tangs had trouble finding the San Felipe PEA
Post #:
3012756

However I gave clear instructions on how to download the PEA:

to read the PEA you will need to access the consultant's website www.sedar.com
and enter the search requirements.

search database
search for: company documents
company name: Santacruz silver
industry group: Metals and minerals - All
document type: technical report
date of filing: 1 Jan to 31 Dec 2014 (you can specify precise dates from the ann I wasn't bothered)

The PEA is 318 pages long. You can download it. There is a lot of interesting information on the geology and metallurgy as well.
capital and operating costs is on p.237


Still, in my post I’d taken the salient parts from the PEA and posted them including page references. (Not good enough? Yet apparently it’s ok to pull figures out of the air and not justify them?).

The distribution of minerals, concentration and ease of access of San Felipe is nowhere as good as Oposura. They have 4 million tonnes with 7% of zinc and lead. Also their deposits are deeper and more expensive to mine.
Oposura has close to surface evenly distributed deposits which will be open cut (the scallops) and then and room and pillar will be used. It’s a cheap method of mining and it's used in low depth mining.
How many times is it necessary to point out the Oposura grade is high, recovery rate is high, mining Opex
Opex is expressed in cost per tonne?

Mine opex
is on p.210 of the PEA for San Felipe
San Felipe opex involves deeper mining at around $32/tonne not needed at Oposura.
The relevant figures are in the summary at the top.

I’m waiting for tangs to justify his claim about Opex using relevant data.

(I have addressed the issue of converting the concentrate in my previous post, but look at the Roadhouse link).

Over to you tangs.