Coal Mines Act, 1911, regulations and orders relating to safety and health / Ministry of Fuel and Power.

  • Great Britain. Ministry of Fuel and Power
Date:
1952
Catalogue details

Licence: Public Domain Mark

Credit: Coal Mines Act, 1911, regulations and orders relating to safety and health / Ministry of Fuel and Power. Source: Wellcome Collection.

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    B. LIST OF TESTING INSTRUMENTS CERTIFIED AS INTRINSICALLY SAFE. Submitted by . Name of Apparatus Certificate No. 1. John Davis & Son | Circuit Testing Ohmmeter range T/EXP/35 (Derby) Ltd.) Derby. 0-300 ohms. 2. Electronic and X-Ray | Exal Fractional Ohmmeter. T/TI/13 Applications Ltd., 17 | Pennant Mews, London, W.8. : 3. Evershed & Vignoles | Safety Ohmmeter Cat. Nos. TP? Ltd., Chiswick, London| 70078 and 70079 (range 0-100 ohms). Constant Pressure MEG In- T/TL/sz sulation Testers, Cat. Nos. 54006, 54007, 54008 and 54009. Constant Pressure MEG Insula- T/T1I/8B tion and Continuity Testers Cat. Nos. 54234, 54254, 54274 and 54294. Bridge MEG Testers Cat. Nos. T/TI/se 67003 and 67004. Megger Testing Sets Cat. Nos. T/TI/12 35008 and 35009. 4, General Electric Co. | Magnet Continuity Testing Set. T/BR/53 Ltd., London, W.C.2. | M5305 Galvanometer. T/T1/3 Earth Continuity Tester, M4146. T/TI/is 5. Heyes & Co. Ltd., | Wigan Intrinsic Testing Instru- T/BR/82 Wigan. ment (for D.C. bells and relays) PERMITTED EXPLOSIVES AND BLASTING APPLIANCES. A. LIST OF THE EXPLOSIVES PERMITTED UNDER CLAUSE 11 OF THE EXPLOSIVES IN CoAL MINES ORDER, 1934. Notes : (Parts 1 and 2 only).—The Explosives marked (S) are per- mitted either with or without an external sheath, and may be supplied and used in either state. In the former state they are known as ‘“‘ Sheathed Explosives ’’. An explosive marked (Eq. S.) is one which, without sheath, is certified to be not less safe than an equivalent sheathed explosive of the same group. The explosives marked * are either not manufactured in Great Britain or are manufactured for export only. 19]