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Thyssen Mining

Raisebore Welders

ON, Canada

Full-time

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Applications open in a new tab.

Job details

Job type: Full-time
Posting language: English
Posted: Nov 5, 2026

Original job description

Build Your Future Underground with Thyssen Mining

Thyssen Mining is seeking experienced Raisebore Welders to support an underground borehole casing project in Ontario. Working as part of the casing installation crew, the Welder will prepare, fit, and weld 6-inch Schedule 120 carbon-steel casing and spool connections for primary paste boreholes while ensuring compliance with project specifications, quality standards, and safety requirements.

Key Responsibilities

Fit, align, and weld carbon-steel casing sections and spool flanges.
Perform complete-joint-penetration (CJP) butt welds in accordance with approved welding procedures, ASME B31.3, and CWB standards.
Prepare pipe ends through cutting, grinding, beveling, cleaning, and fit-up activities.
Read and interpret fabrication drawings, welding symbols, specifications, and weld maps.
Inspect completed welds, identify defects, and perform repairs as required.
Maintain welding records, consumable tracking, and quality documentation.
Operate and maintain welding equipment, grinders, ventilation systems, and fire-prevention tools.
Support casing installation, material handling, rigging coordination, and site housekeeping.
Adhere to all hot-work permits, underground mining procedures, fall protection, and safety requirements.

Qualifications

Valid CWB Welder Certification (required).
Journeyperson Welder certification or equivalent trade qualification (preferred).
Experience fitting and butt welding carbon-steel pressure piping; heavy-wall piping experience preferred.
Ability to produce welds that meet visual inspection and NDE requirements.
Strong skills in pipe fitting, alignment, bevel preparation, welding, and repair work.
Ability to read technical drawings, specifications, and quality documentation.
Underground mining, industrial construction, shaft, raise, or confined-space welding experience is an asset.
Valid driver's license and ability to meet mine-site access requirements.

Working Conditions

Physically demanding underground construction environment.
Work around mobile equipment, suspended loads, and open boreholes.
Ability to work at heights, in confined areas, and under changing underground conditions.
Willingness to work 11.5-hour rotational shifts in Ontario.

Safety

Maintain a strong safety focus by identifying and controlling hot-work, fire, fall, fume, stored-energy, and open-borehole hazards.
Follow all site procedures, permits, ventilation requirements, PPE standards, and stop-work protocols when unsafe conditions arise.

What Thyssen offers

Competitive compensation and comprehensive benefits.
Career growth and leadership development opportunities.
Exposure to diverse underground mining projects across Canada.
Collaborative, safety-focused workplace culture.
Opportunity to make a meaningful impact on project success and company growth.

Apply online through our careers page to submit your resume to the Recruitment Team.

Thyssen Mining is an equal opportunity employer committed to creating an inclusive workplace. We thank all applicants for their interest; however, only those selected for an interview will be contacted.

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More about this job

Responsibilities

The welder will fit, align, and perform complete-joint-penetration butt welds on carbon-steel casing for underground boreholes. They are also responsible for maintaining welding records, operating equipment, and ensuring compliance with safety and quality standards.

Requirements

Candidates must hold a valid CWB Welder Certification and have experience with carbon-steel pressure piping. Preference is given to those with Journeyperson Welder certification and previous experience in underground mining or industrial construction.

Skills

Welding
Pipe fitting
Carbon-steel welding
CJP butt welds
ASME B31.3
CWB standards
Fabrication drawing interpretation
Grinding
Beveling
Rigging
Underground mining safety
Hot-work permits
Quality documentation
Material handling
Pipe alignment

Benefits

Competitive compensation
Comprehensive benefits
Career growth opportunities
Leadership development opportunities

Visa sponsorship

Not detected in the job text

Keywords

Raisebore
Welder
Carbon-steel
Casing
Borehole
CWB
ASME B31.3
Pipe fitting
Butt welding
Underground mining
Industrial construction
Hot-work
Rigging
NDE
Fabrication drawings
Pressure piping
Safety protocols
Ventilation systems
Fire-prevention
Quality standards

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