1. Mine Gasses

2. Carbon Monoxide

3. Physical State
Colorless
Odorless
Tasteless

4. Carbon Monoxide is explosive
Flammability
Carbon Monoxide is explosive

5. incomplete combustion
Sources
Produced by
incomplete combustion

6. Route of Exposure
Absorbed in body
through inhalation

7. Health Hazards
Hemeglobin has an affinity to carbon monoxide times that of oxygen

8. Exposure Levels
Current MSHA allowable exposure level for an 8 hour shift is 50 ppm or, 0.005%

9. Possible mild frontal headache in 2 - 3 hours
Effects
Concentration
200 PPM (0.02%)
Effect
Possible mild frontal headache in hours

10. Frontal headache & nausea in 1 - 2 hours
Effects
Concentration
400 PPM (0.04%)
Effect
Frontal headache & nausea in hours

11. Effects Concentration 800 PPM (0.08%) Effect
Headache, dizziness, & nausea in 45 minutes
Collapse, unconsciousness & death in 2 hours

12. Effects Concentration 1600 PPM (0.16%) Effect
Headache, dizziness, & nausea in 20 minutes
Collapse, unconsciousness & death in 2 hours

13. Effects Concentration 3200 PPM (0.32%) Effect
Headache, dizziness, & nausea in 5 to 10 minutes
Collapse, unconsciousness & death in 30 minutes

14. Unconscious & death in 1 - 3 minutes
Effects
Concentration
12,800 PPM (1.28%)
Effect
Unconscious & death in minutes

15. Carbon Dioxide

16. Physical State
Colorless
Odorless

17. Flammability
Not flammable

18. Produced by complete combustion of carbon material
Sources
Produced by complete combustion of carbon material

19. Absorbed in body through inhalation
Route of Exposure
Absorbed in body through inhalation

20. Inhalation may cause hyperventilation & unconsciousness
Health Hazards
Inhalation may cause hyperventilation & unconsciousness

21. Exposure Levels
Current MSHA allowable exposure level for 8 hour shift is 5000 ppm or, 0.5%.

22. NITROGEN DIOXIDE

23. Physical State
Reddish brown and / or
yellow liquid with
pungent odor

24. Flammability
Not flammable

25. Sources
Produced by diesel exhaust, explosives detonation, & decay of plant material

26. through inhalation or ingestion
Route of Exposure
Absorbed in body
through inhalation or ingestion

27. Reacts with water to form nitrous acid
Health Hazards
Reacts with water to form nitrous acid

28. Exposure Levels
Current MSHA allowable exposure level for 8 hour shift is 3 ppm
Short term exposure limit is 5 ppm