MINING INSURANCE CASE STUDY

Solo Mine-Maintenance Boilermaker, $20M Public Liability and Tools Package

A sole-director boilermaker building a mine-maintenance business needed $20 million public liability and tools cover at around $100,000 revenue. Seven insurers declined the occupation across two quoting platforms before terms were secured.

01

THE SITUATION

A sole-director boilermaker came to Tank Insurance while building a mine-maintenance business alongside other work. Revenue was around $100,000, there were no subcontractors, and the plan was to grow it into a full-time mine-maintenance and fabrication business.

The business wanted $20 million public liability, the limit the client expected mine-site contracts to require. The business also needed tools of trade cover, starting at a modest sum insured and stepping up once a fixed canopy was fitted to the work vehicle, and commercial motor cover for a four-wheel-drive ute carrying the tools between jobs.

The existing arrangement was a personal motor policy on the ute. Nothing covered the liability or the tools, and none of it was cover a site would accept.

02

OUR APPROACH

We treated the three covers as one program rather than three separate purchases, and put the liability and tools risk to market through two broker quoting platforms at the same time.

  • The occupation was described precisely: boilermaking and mine-maintenance work as a sole director, with revenue, work locations and the absence of subcontractors all stated up front.
  • Seven insurers declined the occupation across the two platforms. Where a reason was given, it was business activities or an occupation outside that insurer's guidelines.
  • One insurer offered terms for $20 million public liability with tools of trade cover included, and we placed it there.
  • Commercial motor was quoted separately on the ute, comparing agreed value and market value bases across several insurers, with the client's driver profile disclosed up front.

The tools sum insured was set at the short-term figure with the intention of increasing it once the secure canopy was installed, so the client wasn't paying for cover on tools that weren't yet stored securely.

03

THE CHALLENGES

"Boilermaker" plus "mine" can fall outside a business pack insurer's occupation guidelines before the submission is read. In this placement seven insurers declined, and where a reason was given it was about category, not this client: business activities outside guidelines, occupation declined, outside appetite.

The second challenge was proportion. At $100,000 revenue the premium had to make sense for a business still getting established, and the commercial motor pricing varied widely depending on whether the ute was insured for agreed or market value and between insurers once the driver profile was disclosed.

04

THE OUTCOME

$20 million public liability with tools of trade cover was placed with Allianz at a premium of approximately $1,700 per year.

Final Solution: $20 million public liability and tools of trade package at around $1,700 a year, with commercial motor on the work ute placed alongside at around $2,400 a year on a market value basis.

The client now holds the liability limit it expected mine-site contracts to require, tools cover that can step up as the business grows, and motor cover that reflects the ute's business use rather than a personal policy.

This case records one historical outcome; current insurer appetite, premium, timing and terms depend on the complete risk at the time of application.

For the wider buying context, see our mine operations and maintenance insurance guide and the mining insurance hub.

MINING SUBCONTRACTOR QUESTIONS

What this placement answers for other mining subcontractors

How much is $20 million public liability for a mining subcontractor?
It is individually underwritten, so there is no flat rate. In this placement a sole-director boilermaker at around $100,000 revenue paid approximately $1,700 a year for $20 million public liability with tools of trade included. Other Tank placements of $20 million limits for small mine-services contractors written up on this site sit between around $1,700 and around $4,600 a year, and yours may fall outside that. Activities, sites, turnover, claims history and the markets approached all move the price.
Why do insurers decline mining subcontractors for public liability?
Mine-site work combines a heavily regulated site environment, a high contractual liability limit and, for many subcontractors, a sole-trader or sole-director structure. The occupation can sit outside a business pack insurer's guidelines, so the decline can arrive before anyone reads the submission. In this case seven insurers declined on occupation across two quoting platforms. A decline reflects that insurer's appetite, not whether the risk can be placed.
Does $20 million public liability cover my tools and my ute?
No. Public liability responds to third-party injury and property damage claims. Tools of trade need their own section or policy, and the work vehicle needs commercial motor cover. This placement bundled liability and tools in one policy and placed commercial motor separately.
What does a principal contractor require before a boilermaker can work on a mine site?
The insurance requirement is usually set by each site contract rather than by a statutory minimum. In the mine-services placements Tank has recorded it has been $20 million public liability, and a contract may also call for principal's indemnity or a waiver of subrogation. Read the insurance clause before you buy, because the limit and any endorsements need to be in place before induction.
Can I start with a small tools sum insured and increase it later?
Usually yes, subject to the insurer's conditions. This client insured tools at a modest figure while the work vehicle had no lockable canopy and planned to increase it once one was fitted. Tell your broker when storage or the value of the kit changes, because tools wordings can carry unattended vehicle conditions.

MINING INSURANCE HUB

Put this placement in context

Case-study results are historical and are not a promise of current pricing, capacity or policy terms. This page is general information only and does not take account of your objectives, financial situation or needs.

Building a Mine-Services Business?

Tell us what you do, which sites you work on and the limit your contract requires. We take mine-maintenance trades to insurers that write the occupation, and structure liability, tools and motor as one program.

Last updated: 05/09/2026

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