Raisebore Welders

ON
On-site
Posted Oct 3, 2026
1 position

Opens an external site

Employment type: Full-time
Experience level: Mid-level · 2+ years
Minimum education: Professional degree
Posting language: English
Working hours: 40 hours per week

Job summary

The Welder will fit, align, and weld carbon-steel casing and spool connections for underground borehole projects. They are responsible for maintaining welding records, ensuring quality standards, and adhering to strict underground safety protocols.

Job details

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.

What you’ll do

Requirements

Candidates must hold a valid CWB Welder Certification and have experience with carbon-steel pressure piping. A Journeyperson Welder certification is preferred, along with the ability to work in physically demanding underground environments.