Over the past 100 years, Clark Security has provided security during strikes, plant closings, and emergencies for the following industries:
- Arline
- Automotive
- Beverage
- Chemical
- Construction
- Defense
- Environmental
- Manufacturing
- Fabrication
- Foundry
- Heavy Equiptment
- Hotel
- Mining
- Plastic
- Power Generation
- Publishing
- Paper Mills
- Retail
- Steel Mills
- Trucking
- Utilities
- Warehousing
- Waste Management