During the three month period ended June 30, 2010, we have generated $3,631,300 in total revenue which is comprised of coal sales of $3,615,819 and oil sales of $15,481. We commenced mining operations in the fall of 2009 and recognized our initial revenues in November of 2009. Our primary revenue source is derived through internal mining activities on our permitted leases and represents approximately 88% of our total revenue or $3,213,576. In addition to our internal mining activities, we also generated $402,243 through coal brokering arrangements and $15,481 from our oil production. As we continue to acquire and expand our mineral rights, we anticipate increases in our future production capacity to result in revenue growth.
Our operating expenses totaled $6,690,693 and consisted of costs directly attributable to coal sales, depreciation, depletion and amortization, compensation, professional fees and general and administrative costs. During the three month period ended June 30, 2010 our cost of coal sales was $3,194,737 or 48% of total operating expenses. Depreciation, depletion and amortization totaled $161,666 of which $10,621 represented depletion resulting from our production activities. Compensation expense includes salaries to our executives and administrative staff and related employee costs. Our compensation expense was $3,061,665 for the period and included non-cash compensation valued at $2,764,500. We incurred $89,084 in professional fees for the period which include legal and accounting fees related to our regulatory reporting requirements. Our general and administrative expenses totaled $183,520 and consist of normal office related expenses.
We experienced a loss from operations of $ 3,059,393 for the three month period ended June 30, 2010. Other income and expense totaled $344,423 and is primarily the result of interest in the amount of $301,027 accrued on our note originating from our acquisition of ECC.