RE: Half Year Report8 Mar 2018 00:54
Devonwolf,
the numbers are in the public domain, have been published i.a. in the bankable feasibility study summary, and are readily accessible on Wolf's website, Sedar, and other sources. Drakelands was planned to achieve 3Mtpa throughput based on a 5,5/7 days operation (work ends on Saturdays at 6 p.m. and re-starts on Mondays 6 a.m.). In some documents you can see it's been labeled a 6 days operation but that refers to work on 6 days per week (Monday - Saturday) but 1/4 of Mondays as well as 1/4 of Saturdays is lost.
Given the 3Mtpa throughput target on a 5,5/7 basis we just have to divide the 3Mtpa by 5,5 and multiply it by 7. The result is a 3,8Mtpa throughput target based on a "24/7" operation.
The same applies to production. Output was planned to be 345.000 MTU per annum. Divided by 5,5 and multiplied by 7 -> 439.090 MTU per annum (~110.000 MTU per quarter or 8.444 MTU per week). This answers one of your questions. 439.090 MTU are 4.391 tonnes of WO3 ("tungsten").
Let's have a closer look at the weekly production figure. Wolf, according to the off-take agreement, is supposed to deliver a 65% WO3 concentrate. Let's assume Wolf was delivering exactly that. This means: At nameplate, the 8.444 MTU account for 65% of the total weight of the weekly concentrate deliveries. (As you know, 1 MTU = 10kg so 84.440kg WO3 account for 65% of the total weight). Accordingly, 100% of the weekly concentrate deliveries weigh 129.907kg or roughly 130t.
In other words: Wolf must ship 130t of concentrate per week at 100% nameplate output. Bear that in mind when you have a look at the weekly deliveries to GTP!
Now have peek at Wolf's corporate video. http://www.wolfminerals.com.au/IRM/content/default.aspx
Go to 1:32. Then go to 1:40. I hope you find confirmed what I have said.
BTW, at 1:50 as well as at 2:22 you can see many white bags containing the pre-concentrate that was fed to the refinery on weekends during Q4.
And last but not least, "tungsten" and "concentrate" are not the same thing. "Tungsten" refers to WO3 which is in fact tungsten trioxide (I know this is confusing). Concentrate, however, is a mixture comprising 65% WO3 and 35% dirt. That's why 4.500 tonnes of WO3 ("tungsten") are contained in 6.923 tonnes of 65%-concentrate.