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McCallum Rock

Mag Site Supervisor

Chehalis, Washington

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hirly's read of this role

Seniority
Mid level
Country
US
Work mode
On-site / unstated
First seen by hirly
3 Oct 2026

Derived automatically from the posting. Upload your resume above to see how the role scores against it.

the posting

McCallum Powder is an explosives supplier based out of Chehalis, WA and has been in business since 2016. McCallum Powder assists in the manufacturing, storage, and transportation of explosives products for all McCallum Rock Drilling blasting operations.

McCallum Powder is searching for a full-time Site Supervisor to join our Onalaska, WA site. He or she will be expected to be on site Monday - Friday and may be expected to work some hours on the weekends, depending on operational needs. Our ideal candidate must have a clean criminal background, must have an acceptable driving record, and will be required to pass a pre-employment drug screening test.

What to Expect

Our Site Supervisor will be responsible for the safe, secure, compliant, and efficient day-to-day operation of the explosives storage magazine. He or she will maintain accurate and strict inventory of all explosives products and will ensure McCallum Powder and regulatory requirements are followed.

Minimum responsibilities include:

Comply with all company policies and procedures

Maintain safe operation of the explosives magazine in accordance with federal, state, and local requirements

Ensure required licenses, permits, and inspections remain current

Maintain accurate inventory records and required transaction documentation

Oversee incoming explosive deliveries and safely

Enforce site-specific explosives safety procedures

Control access to restricted areas and maintain accurate access logs

Conduct routine inspections of magazine facilities, housekeeping, and equipment

Communicate and report any safety concerns, inventory discrepancies, incidents, or suspected violations to management

Ability to lift up to and between 50 - 100 lbs.

Minimum skills and qualifications include:

High school diploma or equivalent

Prior supervisory or leadership experience preferred

Strong recordkeeping and inventory skills

Ability to pass ATF background check

Valid driver's license

Familiar with electronic inventory and/or data entry

Excellent attention to detail

Strong communication and decision-making skills

Comfortable working outdoors and in all weather conditions

Ability to work independently most of the time

Benefits include:

Medical, Dental, Vision Coverage (zero cost for the employee)

401k Option (4% company match)

PTO (accrual based)

Paid Holidays

Employee Referral Bonus Program

Monday - Friday; 40 hours a week (overtime acceptable depending on company needs)

Expected to work some weekend hours on occasion

Hourly rate: $25.00 - $27.00

Original posting on McCallum Rock's site ↗

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