Spill cleanup, safe disposal requirements, permit-required confined spaces, lockout/tagout see General Environmental Controls; 1910.141 to 1910.147 Appendix A First aid availability and training see Medical and First Aid; 1910.151 to 1910.152 Fire extinguishers, fixed fire-suppression equipment and other systems see Fire Protection; 1910.155 to 1910.165 Air receiver installation and safety see Com