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Dumas Contracting Ltd.

Development Miner (Jumbo Operator) - Timmins West

Timmins, ON, Canada

Job type: Full-time
Apply by: Oct 29, 2026
Posting language: English
Posted: Sep 29, 2026

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Applications open in a new tab.

Original job description

Description

Position at Dumas

Position: Development Miner (Jumbo Operator)

Project: Timmins West

Rotation: 4-5-5-4

Shift: 10HRs

Wage

Potential Renumeration: KPI Bonus – Referral Bonus

Travel/Accommodations/Meals: Per Site Specific Allowance

Benefits: Dumas has a comprehensive benefits package offering life insurance, health/dental/vision/fitness provisions, and pension and employee assistance program(s) that support your physical, mental, and financial wellbeing.

Pre-Employment Requirements: Alcohol and Drug Test, Site Specific Training, Site Specific Requirements.

Screening: All applications are reviewed by the Recruitment Department; Artificial Intelligence is not used during any stage of the hiring process.

Eligibility: To be considered, you must be a Canadian citizen, or authorized in writing to work in Canada under federal immigration requirements, and currently be residing in Canada.

About The Role

As a Jumbo Operator with Dumas, you will be responsible for the safe and efficient operation of jumbo drills to perform underground development drilling. This role is critical to advancing mine development while maintaining strict adherence to safety and operational standards.

Key Responsibilities

Operate jumbo drills to perform accurate drilling for development headings according to line and grade specifications.
Install ground support as required, including bolts and mesh.
Ensure compliance with Dumas and site-specific safety protocols and environmental regulations.
Conduct pre-operational checks and routine maintenance on equipment, reporting all issues promptly.
Communicate effectively with supervisors and team members to meet production targets.
Participate in workplace inspections and hazard assessments.
All other duties as assigned by leadership

Qualifications

Previous experience operating jumbo drills in an underground mining environment.
Valid Ontario Underground Hard Rock Miner Common Core certification.
Strong knowledge of drilling and blasting techniques.
Ability to work in physically demanding and confined environments.
Excellent safety record and commitment to safe work practices.

Take on the challenges and rewards of a career that will take you far.

Why Dumas?

Excellent compensation and comprehensive benefits
Performance-based financial rewards
Commitment to health and safety
Training and career development
Global opportunities

Submit Your Application

Please send us your resume via our website at www.dumasmining.com – it is important to submit your transcripts using the “Add Portfolio” button under the additional files section at the bottom of the first page.

Thank you for your interest in this career opportunity with Dumas Contracting Ltd. To be considered, you must be a Canadian citizen or authorized in writing to work in Canada under federal immigration requirements, and currently be residing in Canada.

Dumas Contracting Inc. is committed to an environment that is barrier free. If you require accommodation during the hiring process, please inform us in advance so that we can arrange reasonable and appropriate accommodation.

We appreciate the interest of all applicants; however, only those candidates selected for an interview will be contacted. Dumas Contracting Inc. does not use artificial intelligence to screen, assess, or select applications. This advertisement is for an existing vacancy.

The above reflects the general duties considered to describe the principle functions of the job and shall not be construed as a detailed job description of all work requirements that may be inherent in the job. This description is for the purpose of information only. It is understood that the terms or conditions of the job are subject to change as may be deemed necessary by the Company to maintain a safe and efficient operation.

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More about this job

Responsibilities

Operate jumbo drills to accurately drill underground development headings to line and grade specifications, and install ground support such as bolts and mesh. Follow safety and environmental requirements, inspect and maintain equipment, report issues, and coordinate with supervisors and coworkers to meet production targets.

Requirements

Candidates need previous experience operating jumbo drills in an underground mining environment and a valid Ontario Underground Hard Rock Miner Common Core certification. They should know drilling and blasting techniques, be able to work in physically demanding and confined conditions, and demonstrate a strong commitment to safe work practices.

Skills

Jumbo Drill Operation
Underground Development Drilling
Ground Support Installation
Drilling And Blasting
Equipment Inspection
Routine Equipment Maintenance
Mine Safety
Environmental Compliance
Hazard Assessment
Workplace Inspections
Team Communication
Production Coordination

Benefits

Life Insurance
Health Insurance
Dental Insurance
Vision Benefits
Fitness Benefits
Pension
Employee Assistance Program
Performance-Based Financial Rewards
Training And Career Development

Visa sponsorship

Not detected in the job text

Keywords

Jumbo Drill
Underground Mining
Mine Development
Development Headings
Line And Grade
Ground Support
Bolts
Mesh
Drilling And Blasting
Ontario Underground Hard Rock Miner Common Core
Routine Maintenance
Safety Protocols
Environmental Regulations
Workplace Inspections
Hazard Assessments
Production Targets
Underground Development Drilling

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