what are your thoughts, page-4

Chris, I think you need to use at least 2,000tpd.
They were at 1800 late last qtr, 2,000 in January and I expect at least 2200 for Feb and March.
I expect 2000tpd will be conservative for days the mill is running. You are already deducting days for down time.
73 days of mill running on your assumption by 2000tpd would be 146,000t for the qtr. Otherwise I agree - including your calculation on ounces from your tonnes grade and recovery. Eexcept I got 18,379ozs. If you were an employee I'd be wondering if you were trying to pinch the extra 2 oz's :)
Joking of course; no more than a rounding error in one of our numbers.

Excalibur, they have spent a lot of money over the last year getting the mine ready with u/g development work for this expansion so hopefully they can easily mine at 2000tpd plus.
Remember targeted mill rate is 2500tpd so hopefully they are geared up to meet that rate of mining and 2000-2200 is easily achieved.

As Chris replied, the extra u/g development work led to lower average grades which should now recover to some degree. Also lower grade ore would have been used during commissioning. The lower mill availability and lower throughput rates together with lower grades combined to deliver much less gold in the Dec qtr; More tonnes mined for less gold pushed cost/oz higher. This cost/oz should fall sharply this qtr with the higher availability, higher throughput and perhaps higher average grade. Costs/oz should be much lower on much higher gold o/p.

Excalibur; yes mining costs will be higher on more tonnes mined but if you meant cost per tonne mined might be higher, I don't know. However I don't see why it would be. In any case cost per oz will almost certainly be much lower for reasons outlined above.