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| Archive Reference / Library Class No. | NCB/A/BUT/5/14/12 |
| Former Reference | N5/263 |
| Title | Butterley Company correspondence file with the British Standards Institution on standard designs and specifications |
| Date | Mar 1939-Jan 1947 |
| Description | Including draft specifications for flameproof electric light fittings, bolted flameproof cable-couplers, protective toes of boots used for industrial purposes, test sieves, flameproof plugs and sockets, cable glands and sealing boxes for use in mines, goggles for protection against flying fragments, and standards for sockets for wire ropes and paper insulated cables |
| Extent | 1 file |
| Level | File |
| Repository | Derbyshire Record Office |
| Archive Creator | Butterley Company |
| National Coal Board |
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