Depreciation/Depletion represents the sum of Depreciation and Depletion. Depreciation/Depletion is usually the largest non-cash expense factored into net income under the Indirect Cash Flow Method.

Developed Square Kilometers represents the total area, in square kilometers, that are allocated or assignable to productive mines or mines capable of production.

Developed Square Kilometers – Oil & Gas represents the total area, in square kilometers, that are allocated or assignable to productive wells or wells capable of production.

Diamond Production (Carats) represents the total production volume of Diamonds in Carats, by the mining company during the specified period of time.

Diamonds, Average Price per Carat, Total represents Company level Average Selling Price of Diamonds per Carat during the specified period of time, as reported by the company.

Diamonds, Reserves (Carats) represents the total Diamonds reserves owned by the mining company in Carats, as at the period end.

Diluted EPS After Stock-Based Compensation Expense represents Net Income After Stock-Based Compensation Expense plus the Dilution Adjustment, divided by Diluted Weighted Average Shares.

Diluted EPS Excluding Extraordinary Items represents Diluted Net Income excluding Total Extraordinary Items and divided by Diluted Weighted Average Shares.

This is the Adjusted Income Available to Common Stockholders for the most recent fiscal year divided by the most recent fiscal year's Diluted Weighted Average Shares Outstanding.

Diluted EPS Including Extraordinary Items represents Diluted Net Income divided by Diluted Weighted Average Shares.