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Card 6

Front

What does coal contain?

Back

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Card 7

Front

What does limestone contain?

Back

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Card 8

Front

What do ripple marks in rocks indicate?

Back

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Card 9

Front

What do rock salts contain?

Back

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Card 10

Front

Formula for salt?

Back

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Card 11

Front

Is rock salt soluble?

Back

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Card 12

Front

Why does rock salt have a grip?

Back

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Card 13

Front

How does salt mining contaminate water supplies?

Back

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Card 14

Front

What makes salt a hazard?

Back

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Card 15

Front

How can risks be estimated?

Back

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