| 41. | It was also a source of building material in earlier times.
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| 42. | The waterways currently transport 1 million tons of building materials yearly.
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| 43. | Besides lime stone also mud bricks were used as building material.
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| 44. | Searching for building materials, the prince journeyed out from Osaka.
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| 45. | But medical supplies and building materials are in short supply.
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| 46. | The most common building material was brickwork, followed by mortar.
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| 47. | We have rushed emergency house building materials to the area,
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| 48. | Even the building material _ heavy concrete _ is symbolic.
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| 49. | The primary building material is brick, with cast stone accents.
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| 50. | It makes a great road-building material when mixed with asphalt,
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