| 41. | Instead of forming the hard rubber material he was looking for, the compound remained slightly gooey to the touch.
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| 42. | The Kammer & Reinhardt machine utilized 5-inch hard rubber discs, and some machines and discs were exported to England.
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| 43. | The grips are made of hard rubber ( Gutta percha ) and ivory being the only known other original.
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| 44. | In 1992, a non-profit " Hard Rubber Music Society " was created as a vehicle for funding the orchestra.
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| 45. | It is harvested green, when it is starchy and has a firmness like that of a hard rubber ball.
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| 46. | The cube, which had the feel of hard rubber, slipped and dropped toward what at the moment was Jordan's turf.
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| 47. | The original power block he designed was essentially a simple winch which used a V-shaped roller coated with hard rubber.
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| 48. | She hunkers down and gently strokes the hard rubber track, searching for the raised painted line that marks the starting place.
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| 49. | The rigidity of hard rubber at room temperature is attributed to the van der Waals forces between the intramolecular sulfur atoms.
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| 50. | Instead of a single hard rubber case, it had two concentric hard rubber cases with a layer of soft rubber between them.
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