40,000t at, say, $6,000/t is $240,000,000, less say $50m costs is $190m for dividends and debt repayment, $100m debt is $90m for divis across 280m shares is a 32c div year 1, and 68c for years 2 to 4, hopefully.
Total divis for years 1 to 4 are thus in the order of $2.36. Then the grades get lower.