I think we need to revisit this. You have to remember that the hours they processed gravel was for 150 hrs and they got 50 ounces. You have to remember the total mining hours is for all the work they did. NDEP had PCFG shut down from processing Gravels up to middle or end of November. So you would need to take total hours worked for 4th qtr divide that by 11 workers then divide that by days they could have worked in that qtr to get average hours. Then here is the fun part. You take December and multiply the average hours into the days in December they could have worked then based on the 150 hr = 50 oz divide those hour 1/3 and you can get a rough estimate.
Here is what I come up with 6674 / 11 = 606.72 hrs worked per person for 4th qtr. you had 63 days in the 4th qtr they could have worked taking away 2 holidays. that equals about 9.6 hrs a day per person worked.
Do December you have 21 days times 9.6 that would be 201.6 hrs of minng divide that by 3 and you get 67.2 ounces but remember the gold mind in the 2nd and 3rd qtr was from the remaining sample pile and 20 ounces of their start up mining before they were shutdown by PCFG so the 67.2 ounces in December is a low esitmate but gives us an Idea for December numbers.