SDS

06/01/2015 Marble – Page 3 of 7
6. Accidental release measures
Personal precautions, protective equipment and emergency procedures:
Persons involved in cleanup processes should first observe precautions (as appropriate) identified in Section 8 of this
SDS. For emergencies, contact 3E Company at 1-866-401-5424 (24 hours/day, 7 days/week).
Environmental precautions:
Prevent from entering into sewers or drainage systems where it can harden and clog flow.
Methods and materials for containment and cleaning up:
Spilled material, where dust is generated, may overexpose cleanup personnel to respirable crystalline silica-containing
dust. Do not dry sweep or use compressed air for clean-up. Wetting of spilled material and/or use of respiratory
protective equipment may be necessary.
7. Handling and storage
Precautions for safe handling:
Respirable crystalline silica-containing dust may be generated during processing, handling, and storage. Use personal
protection and controls identified in Section 8 of this SDS as appropriate.
Conditions for safe storage, including any incompatibilities:
Do not store near food, beverages, or smoking materials.
8. Exposure controls/personal protection
Legend:
NE = Not Established; PEL = Permissible Exposure Limit; TLV = Threshold Limit Value; REL = Recommended Exposure Limit; OSHA = Occupational
Safety and Health Administration; MSHA = Mine Safety and Health Administration; NIOSH = National Institute for Occupational Safety and Health;
ACGIH = American Conference of Governmental Industrial Hygienists
Component
OSHA/MSHA
PEL
ACGIH
TLV
NIOSH
REL
Limestone (Calcium Carbonate)
Respirable dust containing silica
Total dust containing silica
Respirable Crystalline Silica (quartz)
Respirable Tridymite and Cristobalite
(other forms of crystalline silica)
15 

(total dust)
5 

(respirable fraction)
10 

÷ (% silica + 2)
OSHA: 30 

÷ (% silica + 2)
MSHA: 30 

÷ (% silica + 3)
NE - Use respirable dust PEL
1/2 of OSHA and MSHA respirable
dust PEL
10 

(total dust as calcium
carbonate)
Use Respirable Silica TLV
NE
0.025 

0.025 

15 

(total dust)
5 

(respirable fraction)
Use Respirable Silica REL
NE
0.05 

0.05 

Exposure Guidelines:
Respirable dust and quartz levels should be monitored regularly to determine worker exposure levels. Exposure levels in
excess of allowable exposure limits should be reduced by all feasible engineering controls, including (but not limited to)
wet suppression, ventilation, process enclosure, and enclosed employee workstations.
Engineering Controls:
Activities that generate dust require the use of general ventilation, local exhaust and/or wet suppression methods to
maintain exposures below allowable exposure limits.
Eye Protection:
Safety glasses with side shields should be worn as minimum protection. Dust goggles should be worn when excessively
(visible) dusty conditions are present or are anticipated.
Skin Protection (Protective Gloves/Clothing):
Use gloves to provide hand protection from abrasion. In dusty conditions, use long sleeve shirts. Wash work clothes
after each use.
Respiratory Protection:
All respirators must be NIOSH-approved for the exposure levels present. (See NIOSH Respirator Selection Guide). The
need for respiratory protection should be evaluated by a qualified safety and health professional. Activities that
generate dust require the use of an appropriate dust respirator where dust levels exceed or are likely to exceed
allowable exposure limits. For respirable silica levels that exceed or are likely to exceed an 8 hr Time Weighted Average