Rotherham test

Bobbinite and some of the other explosives permitted for use in mines caused, however, a number of explosions of firedamp and coal-dust, and it was decided therefore to adopt a more exacting form of test. In 1912, the Rotherham test was... 

The No 3 No 4 compns passed the Rotherham Test, whereas the No la passed the Buxton Test... 

Curtisite. A Brit coal-mining expl formerly on the "Permitted List". It was made by Curtis Harvey and consisted of AN 88, TNT 8 MNN 4%. A modification of compn, called Super-Curtisite, enabled it to pass the Rotherham Test. The modified compn contd AN 38.5, KN03 29.5, TNT 10 Amm chloride 22%. The limit chge was l6oz power (by ballistic pendulum) was 2.71 vs 3-27 1 for Gelignite contg 60% NG... 

Roburites were also manufd in Engl by the Roburite Explosives Co, Ltd, who had the following formulation on the old permitted list AN 88, dinitrobenzene 11 and chlor-naphthalene 1%. The following compn passed the Rotherham test and was on the permitted list AN 61, TNT 16 and Na chloride 23%. Its limit charge was 18 oz, and its power (by swing of BalPend) was 2.86 inches (Ref 4)... 

Rotherham Test. See under Coal Mining Explosives, Testing for Permissibility in Vol 3, C372-L... 

Refs 1) Marshall 1(1917), 374. 2) Barnett (1919), pi36(Duxite) 123—25 (Rotherham Test) 182—84 (Ballistic Pendulum Test)... 

The Home Office testing station was transferred to Rotherham in 1911 and a new gallery was erected. It was 5 ft dia., with an explosion chamber 18 ft long. The steel mortar was 120 cm long with a 55 mm bore. 

In 1921, difficulties with the supply of coal-gas at Rotherham led to the temporary transfer of testing to Ardeer and eventually a new Research Station was established at Buxton in 1922. 

Duxite. One of the older (1914) British permitted explosives which. passed the Rotherham Gallery Test . It consisted of NG 31—33, CC (collodion cotton) 0.75—1 5,... 

Encyclopedia of Explosives, PATR 2700, Vol 1(1960), pp Vll—VIII (Ballistic Pendulum Test) 4) Ibid, Vol 3(1966), p C372 (Rotherham Gallery Test)... 

Oynobels. A series of British mining explosives, of which the older type passed the Rotherham Gallery Test and was on the British Permitted List K chlorate 27, NG 32.5, Collod Cotton 0.7, Amm oxalate 29.5 woodmeal 10.3%. Its swing by Ballistic Pendulum was 2.6l inches compared with 3.27 for "Standard 60% Gelignite (Power... 

H. Maclachlan, English Education under the Test Acts, Manchester, 1931, 203, mentions that Warltire, who has been a lecturer for about 50 years on these subjects (natural philosophy), had given a course in 1803 at Rotherham. 

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