Alpha Natural Resources (NYSE: ANR) reported earnings on May 2. Here are the numbers you need to know.

The 10-second takeaway
 For the quarter ended March 31 (Q1), Alpha Natural Resources met expectations on revenues and exceeded expectations on earnings per share.

Compared to the prior-year quarter, revenue shrank significantly. Non-GAAP loss per share grew. GAAP loss per share increased.

Margins contracted across the board.

Revenue details
 Alpha Natural Resources logged revenue of $1.33 billion. The 11 analysts polled by S&P Capital IQ predicted revenue of $1.33 billion on the same basis. GAAP reported sales were 30% lower than the prior-year quarter's $1.90 billion.

Source: S&P Capital IQ. Quarterly periods. Dollar amounts in millions. Non-GAAP figures may vary to maintain comparability with estimates.

EPS details
 EPS came in at -$0.47. The 20 earnings estimates compiled by S&P Capital IQ predicted -$0.56 per share. Non-GAAP EPS were -$0.47 for Q1 against -$0.27 per share for the prior-year quarter. GAAP EPS were -$0.50 for Q1 compared to -$0.14 per share for the prior-year quarter.

Source: S&P Capital IQ. Quarterly periods. Non-GAAP figures may vary to maintain comparability with estimates.

Margin details
 For the quarter, gross margin was 12.3%, 230 basis points worse than the prior-year quarter. Operating margin was -9.0%, 820 basis points worse than the prior-year quarter. Net margin was -8.3%, 680 basis points worse than the prior-year quarter. (Margins calculated in GAAP terms.)

Looking ahead
 Next quarter's average estimate for revenue is $1.27 billion. On the bottom line, the average EPS estimate is -$0.56.

Next year's average estimate for revenue is $5.21 billion. The average EPS estimate is -$2.11.

Investor sentiment
 The stock has a three-star rating (out of five) at Motley Fool CAPS, with 859 members out of 917 rating the stock outperform, and 58 members rating it underperform. Among 144 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 127 give Alpha Natural Resources a green thumbs-up, and 17 give it a red thumbs-down.

Of Wall Street recommendations tracked by S&P Capital IQ, the average opinion on Alpha Natural Resources is hold, with an average price target of $10.80.

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