Mine operators seeking further information regarding the construction and installation of falling object protective structures (FOPS) may consult the following national consensus standards, as applicable.

MSHA STANDARD 56.14106, FALLING OBJECT PROTECTION.

   +-------------------+-----------------------------------------------+
   |     Equipment     |          National consensus standard          |
   +-------------------+-----------------------------------------------+
   | Front-end loaders | Society of Automotive Engineers (SAE) minimum |
   |  and  bulldozers  |  performance criteria for falling object      |
   |                   |  protective structures (FOPS) SAE J231        |
   |                   |  January, 1981.                               |
   | Fork-lift trucks  | American National Standards Institute (ANSI)  |
   |                   |  safety standard for low lift and high lift   |
   |                   |  trucks, B 56.1, section 7.27 1983; or,       |
   |                   | American National Standards Institute (ANSI)  |
   |                   |  standard, rough terrain fork lift trucks,    |
   |                   |  B56.6 1987.                                  |
   +-------------------+-----------------------------------------------+