Napkin maths to guess HM3 profits

Here's what I've come up with based on the information we've already been given.
Happy to be corrected if I've made mistakes here or unreasonable estimations.
I've never found a spec of gold in my life.

OGX EARNING CALULATIONS
Assuming our Dore sells for 75% of the price of gold
Assuming HM3 - 25t/h running 10 hours a day (250t per day)
Assuming 6 running days per week
Assuming ASIC of $1100/oz

Previous hammer mill tests from batches 1-4 gave an average gold recovery of 38g/t from samples across at least
21 different locations across the mine
No reason to expect a lower recovery rate from HM3

38g/t:
250 tonnes * 38g/t = 9500g = 335oz (Dore)
335 * 0.75 = 251oz
251 * $1700 = $427k
251 * $1100 = $276k
Profit = $151k per 10 hour day ($15.1K profit per hour)
Yearly profit from HM3: $47m

30g/t:
250 * 30 = 264oz (Dore)
264 * 0.75 = 198oz
198 * $600 = $119k (11.9k per hour)
Yearly profit from HM3: $37m

25g/t:
250 * 25 = 220oz (Dore)
220 * 0.75 = 165oz
165 * $600 = $99k ($9.9k per hour)
Yearly profit from HM3: $30m

20g/t:
250 * 20 = 175oz (Dore)
175 * 0.75 = 132oz
132 * $600 = $79k
Yearly profit from HM3: $24.6m

15g/t:
250 * 15 = 132oz (Dore)
132 * 0.75 = 99oz
99 * $600 = $59k
Yearly profit from HM3: $18m

10g/t:
250 * 10 = 88oz (Dore)
88 * .75 = 66oz
66 * $600 = $39k
Yearly profit from HM3: $12m