| 1. | This produced refractory bricks, used to line furnaces.
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| 2. | In the first tens of years the furnace lining was of refractory brick.
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| 3. | During this time the structure, built of refractory bricks, absorbs the heat.
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| 4. | Refractory bricks are designed in several layers.
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| 5. | Each has a single outer shell made of welded steel lined inside with refractory brick.
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| 6. | Special Unshaped Refractories and Unburned Refractory Bricks.
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| 7. | Lmura has a mixed economy, with the manufacture of refractory bricks as a major industry.
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| 8. | The northern structure was constructed of yellow refractory bricks with single coarse brick walls spaced at regular intervals.
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| 9. | The semisubterranean walls of these furnaces were lined with refractory bricks and had bottoms made of refractory clay.
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| 10. | During the 1800s the Loxley Valley became an important producer of refractory bricks for the expanding Sheffield steel industry.
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