=BELLITE= is essentially a mixture of ammonium nitrate and metadinitro-benzene. It has been used extensively as a coal-mine explosive, and was patented by C. Lamm of Stockholm in 1885. Two varieties passed the Woolwich Test and were on the old Permitted List-- No. 1. No. 3. Ammonium nitrate 83·5 93·5 Dinitro-benzene 16·5 6·5 No. 1 contains just enough oxygen for complete combustion, and No. 3 contains a large excess of oxygen. To enable the explosive to pass the Rotherham Test sodium chloride has been added. There were four varieties on the present Permitted List, but all except the following, No. 1, have been repealed-- No. 1. _Date of Permit_ 3-2-16 Ammonium nitrate 63·5 Dinitro-benzene 15 Sodium chloride 16·5 Starch 5 Limit charge 20 Power (swing of ballistic pendulum) 2·74 =BENTAL COAL POWDER.=--An American coal-mine explosive on the Permissible List. It is an ammonium nitrate explosive. =BITUMINITE.=--There are several coal-mine explosives of this name on the American Permissible List. Nos. 1, 3, 4 and 8 L.F. are nitroglycerine explosives. No. 5 is an ammonium nitrate explosive. =BLACK DIAMOND.=--There are several coal-mine explosives of this name on the American Permissible List. Nos. 2A, 3A and 6 L.F. are nitroglycerine explosives, whereas Nos. 5, 7 and 8 are ammonium nitrate explosives. =BLACK POWDER= is a name for ordinary gunpowder, a mixture of potassium nitrate, sulphur and charcoal. =BLASTINE= is a high explosive having approximately the composition-- Ammonium perchlorate 60 Sodium nitrate 23 Dinitro-toluene 11 Paraffin wax 6 As the sodium nitrate in the above is not equivalent to the ammonium perchlorate, part of the chlorine is given off in the form of the poisonous gas, hydrogen chloride (hydrochloric acid). =BLASTING GELATINE.=--Nitroglycerine, stiffened by having collodion cotton dissolved in it. Discovered by Nobel in 1875. It contains about-- Nitroglycerine 93 Collodion cotton 7 and also often a fraction of a percentage of calcium or magnesium carbonate to increase its stability. This is the most powerful of all the explosives in common use. =BOBBINITE.=--The only explosive of the gunpowder class the use of which is permitted in coal mines in England. In most foreign countries explosives of this class are not allowed to be used in them at all. The permission is only temporary, but has been extended to the end of 1920, and is restricted to mines that are not gassy or dangerous from coal dust. There are two definitions, but the second is the one that is generally manufactured apparently--