| 31. | There was no light, heat source or insulation inside the container.
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| 32. | The heat source for melting synchronously with accretion remains unclear, however.
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| 33. | This is usually done with a torch or some other directed heat source.
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| 34. | -- When processing time is up, remove the canner from the heat source.
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| 35. | Bring the fondue pot to the table and place over its heat source.
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| 36. | As with all heat sources, keep those hot bulbs away from flammable materials.
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| 37. | Keep the rack four or six inches from the heat source.
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| 38. | Fire sprinklers respond only the sprinkler closest to the heat source.
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| 39. | Scraping embers from a burning structure also removes the heat source.
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| 40. | The heat source is positioned lower than the heat sink.
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