ILLUSTRATIONS Fig. 1. Organization chart for coal-mine fires or explosions. 2. Organization chart for metal-mine fires_ 3. Edison (model P) electric cap lamp__. 4. Wheat (GW) electric cap lamp- Page 5 5 15 5. Types of approved flashlights_. 6. Chemical fire truck.. 7. Water fire truck_ 8. Batteryless telephone assembly. 9. Details of batteryless telephone assembly. 10. Brattice-cloth stopping. 11. Brick stopping.. 12. Brick and tile stopping recommended by the National Mine Rescue Association___ 13. Concrete stopping.. 14. Erecting a tile stopping_ 15. Board stopping plastered with wood fiber. 16. Stopping of patent lath plastered with wood fiber 39 40 17. Sketch of plank and tarred-felt stopping_ 18. Sketch of pack-wall stoppings_ 19. Sealed fires in the Oakmont mine__. 20. Relation between quantitative composition and explosibility of mixtures of methane, oxygen, and nitrogen_ 21. Sketch of procedure of recovery work, Horning mine...... 23. Reserve oxygen-breathing-apparatus and gas-mask crew at the freshair base 24. Gas-mask crew erecting a brattice-cloth stopping___ 25. Section of the Federal No. 3 mine in which air locks were used._ 26. Class in rescue and recovery operations receiving instructions in use of equipment- 27. Problem in rescue and recovery work after explosion__. 22. Officials in charge of shift checking over crews and equipment before going underground after an actual explosion_ 70 74 25 34 78 79 42 44 59 61 67 |