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64 Grey Street, Clarence Town, NSW 2321

Line Boring & Liquid Nitrogen

KRH is the line boring specialist. We are genuine in quotes and measuring.

Our work is precise and we use state-of-the-art internal lathes, and machine-controlled inside diameter welders. We also do onsite milling as well as refurbish and rebuild parts, and also offer parts exchange.

KRH can fit in with your service schedules or be onsite promptly in cases of emergency. We know it is cheaper to machine components than buy new parts. We work reactively and proactively and only machine if the equipment is out of spec. If it’s within specifications, we check, measure and carry out quality assurance.

Our liquid nitrogen (freezing) service for pins, bearing, and bushes go hand-in-hand with our line boring. We are also aware some companies will only require the liquid nitrogen solution, which we are happy to offer.


If you’re a maintenance superintendent, we can bolster your crew numbers. If you have a problem, we have a solution.

About line boring

Line boring, or reclaiming, is a technical skill and crucial maintenance operation. KRH’s reputation is based on genuine job appraisal and quoting.

We’re happy for mines to plan ahead and book us in advance. That way you can save money by taking the machine apart, and we come in and fix it. Our fully quoted line boring service includes the truck and machinery, and the team will go offsite as well to refurbish stored equipment.


KRH sells and delivers liquid nitrogen and also offers a “freezing” service for pins, bearings and bushes. We can heat and freeze pins, allowing for a “crushed” fitting, or we can leave a clearance.

Line boring services contacts:

Daniel WynandsLine boring Supervisor – Responsible for sourcing jobs, quoting, managing line boring team and jobs, and works on the tools as well.

Mark CameronManager, Trade Services – Responsible for recruitment, rostering, ensuring workers have the necessary equipment, PPE and uniforms, monitoring performance, and client relations.

Forrest SaundersDirector and CEO – Responsible for networking, overseeing operations, growth planning, backing up managers when they are on leave, and hands-on when needed.


Safety First
Honest and Cost-effective
Skilled, Quality Workmanship

Current Job Opportunities

KRH has an established reputation as a provider of skilled tradespeople, line boring services and light-vehicle repair. We are one of the few companies with ongoing contracts for mining services support and as such require workers to help fulfil our obligations.

If you are a qualified line borer, plant mechanic, heavy vehicle mechanic, auto electrician, high-voltage electrician, fitter machinist or boilermaker and would like to work with one of the Hunter Valley’s most progressive businesses, please contact us.

We have ongoing long-term contracts for trades services offering excellent remuneration packages and have an enviable safety record. You must have experience with mining operations.

Our light-vehicle mechanical repair workshop and “headquarters” is based at Clarence Town and we are transforming the current two-bay shed into a state-of-the-art operation. But we are a “mobile” employer and service the Hunter Valley and Central Coast. Currently, we have 45 employees on the books, many of them home-based. Our policy, where possible, is to always employ locals. Please give us a call if you would like to join the KRH team.

Our Team

Forrest Saunders has established a great reputation throughout the Hunter Valley and Central Coast. He has assembled a skilled and dependable team, all of whom have worked on the tools and have a mining trades background.

Director and CEO
Finance and Administration Manager
64 Grey Street,
Clarence Town,
NSW 2321