Book excerpt: Embracing virtually every type of equipment used in coal mining, the publication also gives the approval dates and the names of manufacturers of equipment certified as safe by the Bureau. Obsolete equipment still in use, but for which repair parts are not currently available, are listed in the appendix. An additional appendix containing trade names and names of producers of seven approved flame-safety lamp fuels and providing information regarding the availability of each of the listed fuels in the various mining areas is also included. (See also IC 7465).