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Monthly Production Trend 10.1 10.0 9.5 9.6 9.3 9.3 8.5 25.8 23.3 Coal OB Removal 11.4 10.8 10.5 9.9 9.8 9.0 11.0 10.8 10.6 10.6 10.6 10.4 10.2 9.6 8.6 8.2 32.1 32.4 31.5 29.7 27.8 27.7 26.5 25.8 26.3 25.2 25.0 23.8 101 -Stripping Ratio Delta Dunia 10.0 9.5 9.5 9.6 9.2 9.2 9.3 8.9 8.7 33.5 33.3 31.2 31.4 31.0 28.9 29.3 28.1 27.8 26.0 25.0 27.8 27.6 26.3 23.0 26 25.4 25.1 20.8 Jan Feb Mar Apr May Jun July Aug Sep Oct. Nov Dec-11 Jan Feb Mar Apr May 2.6 2.5 2.6 2.7 2.8 3.3 3.4 2.8 3.0 3.3 3.1 2.7 2.5 2.2 2.6 2.8 2.8 3.1 3.2 2.8 3.1 3.2 3.2 3.1 2.5 2.3 2.7 2.5 2.8 2.9 2.8 2.9 3.1 Jun July Aug Sep Oct Nov Dec-12 Jan Feb Mar Apr May Jun Jul Aug Sep 7

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