Word: bt
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Dates: during 1960-1969
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...method, which cost $2.8 million to research and perfect, machines bombard the molten glass with microscopic metallic particles as it passes across the tin bath. With an investment of only $36,000, glassmakers can add the tinting process to a regular plant, color as much as desired bt the continuous ribbon of glass. Says Sir Harry Pilkington, 62, chairman of the 141-year-old family-owned company: "We already knew that our float process leads the world in the manufacture of this type of glass. As a result of our new discovery, we hope demand will increase enormously...