Rock handling, stockpile management, and support work at Canadian quarries, pits, and aggregate operations — what actually survives the environment and what to avoid.
Quarries and aggregate operations are brutal environments for equipment. Crusher run, bank run gravel, river rock, and blasted limestone all have one thing in common: they eat through cutting edges, wear bucket bottoms, and destroy standard attachments in a season that would last years in topsoil. If you're putting a skid steer to work in a pit or quarry, you need attachments built for the environment — not aftermarket general-purpose equipment that happens to be on sale.
That said, skid steers have a genuine and important role in aggregate operations. They're not doing the primary production work — that's wheel loaders, excavators, and articulated dump trucks. They're doing the support work: cleanup around crushers, feeding conveyors with fines, loading trucks in tight spots, and sorting material around the yard. Done right, a well-equipped skid steer makes a pit run significantly more efficiently.
Let's be clear about the limitations first. A mid-frame skid steer — say a Bobcat T650 with a 2,400 lb ROC — cannot compete with a Volvo L90 wheel loader moving crushed limestone. The wheel loader wins on every count: bucket size, cycle time, operator comfort, and machine life in abrasive conditions. A skid steer in a production loading role is the wrong machine for the job.
But there are roles where the skid steer is the right machine:
If a Canadian aggregate operation — and there are roughly 6,000 aggregate pits and quarries operating in Canada at any given time — already has a wheel loader, the skid steer is a support machine. If the operation is small enough that a wheel loader isn't justified (a small rural pit producing under 20,000 tonnes/year), a large skid steer can carry more of the production load.
This is where most people go wrong. A standard GP (general purpose) bucket in light-gauge steel will not last in aggregate work. Angular crushed material grinds away bucket bottoms and cutting edges aggressively. You need:
A purpose-built rock bucket has several features a GP bucket doesn't: heavier-gauge side plates (often 1/2-inch AR steel vs. the 3/8-inch of a GP), reinforced corners where wear is highest, a replaceable bolt-on cutting edge in AR400 or AR500 steel, and sometimes wear plates on the bucket bottom and sides. The Attachment Zone JB Series, Bobcat's own rock bucket lineup, and the McMillen Rock/Dirt combo are examples commonly run in Canadian aggregate operations.
A 66-inch or 72-inch rock bucket in AR400 steel is the standard choice. Wider than 72 inches is unwieldy in the tight spaces around processing equipment; narrower than 60 inches means too many cycles. The cutting edge is the expendable part — budget to replace it every 200–400 hours in crushed aggregate (faster in hard rock, slower in sand and gravel).
Bank run sand, fine aggregate, and crushed stone screenings load more volume per bucket than their weight would suggest. A high-capacity (1.2–1.4 cubic yard) bucket in medium-gauge construction with a smooth bottom and solid side construction handles this material efficiently. You're not fighting the abrasion of angular crushed stone — you're moving volume, so bucket size matters more than armor grade.
The mistake is using a compost or mulch bucket (very thin gauge, designed for lightweight material) for sand or gravel. The material density alone will stress the bucket weld seams over time. Use a standard rock bucket or a bucket specified for aggregate — not a landscape or compost bucket that happens to be large.
This comes up constantly. Tooth bars (bolt-on teeth across the cutting edge) give aggressive breakout in compact material. In loose aggregate, they're unnecessary — you're scooping, not digging. A flat cutting edge scoops clean, loads full, and wears predictably. Serrated or shark-tooth cutting edges are good for medium-compaction aggregate (gravel below a stockpile that's been sitting a year) but unnecessary for loose material and harder to replace cleanly when worn.
Skip the tooth bar for general aggregate cleanup and loading. Keep a tooth bar or tine-style attachment for getting into compacted aggregate at the bottom of a stockpile — that material can be nearly as hard as frozen ground.
Stockpile management — maintaining the shape of product piles, reclaiming material from the edges, blending material when needed — is ongoing work in any aggregate operation. The skid steer handles the tidy work that the big loader doesn't do precisely: pulling material from the back of a pile to reclaim product being buried, cleaning up spill and loose material at the pile base, and pushing fines back into the stockpile base.
Pushing a stockpile with a bucket is less efficient than using a blade. For stockpile base maintenance — spreading and consolidating the pile foot — a dozer blade attachment is faster than making multiple bucket passes. The angled blade position pushes material cleanly to the side while traveling forward.
One specific task where skid steers excel: the area directly under a conveyor discharge point. Big wheel loaders can't get close; the material piles up and eventually starts to obstruct the conveyor. A skid steer cleans this out in minutes and keeps the plant running without requiring a plant shutdown for cleanup.
Mobile and semi-mobile crushing plants — the Metso Lokotrack, Terex Finlay, Kleemann, and similar tracked systems common in Canadian aggregate operations — generate significant material spillage and fines buildup during operation. The skid steer handles this continuously during a production run:
Working around active crushing plants creates specific hazards: moving conveyor parts, high-decibel noise (ear protection required), and material falling from elevated conveyors. WorkSafeBC Part 19 (Explosives) and Part 20 (Construction) both apply in quarry contexts, and all provinces have specific requirements for working around processing equipment. Operators need site-specific safety orientation before working in or around active processing equipment areas.
Silica dust in quarry environments: Crushed granite, sandstone, and certain limestone types generate respirable crystalline silica dust. In most provinces, working in dusty aggregate environments requires dust suppression (water) or respiratory protection rated for silica. BC WorkSafe OHS Reg Section 5.54 sets a silica exposure limit of 0.025 mg/m³ (TWA). Open cab skid steers in dusty conditions often require an external N95 or better respirator for the operator, or a filtered pressurized cab.
The operational side of an aggregate pit — haul roads, dewatering ditches, pond management, berm maintenance — requires ongoing earthwork that the production equipment doesn't do. A skid steer with a blade handles pit road maintenance: grading haul roads between blasts, maintaining drainage ditches to keep pit floor dry, shaping the pond berm that keeps the dewatering pond contained.
Scale house maintenance — the approach aprons and drainage around truck scales — needs periodic attention. Material tracks onto the scale pad from loaded trucks, accumulates, and eventually affects scale accuracy. A bucket cleans this up without the heavy roller action that could affect scale calibration.
The quick-attach coupler — whether Bobcat's proprietary Bob-Tach or a universal adapter — sees accelerated wear in aggregate environments. Angular stone gets into the wedge mechanism and accelerates wear on the locking bars and mounting faces. Inspect the quick-attach engagement at the beginning of every shift in quarry use. A loose quick-attach in this environment can release unexpectedly. Consider a dedicated set of pin-on attachments for high-wear quarry applications if you're running the machine in aggregate work more than 50% of the time.
Dust contamination of hydraulic quick-connects is a real problem in dusty quarry environments. Crushed stone dust is abrasive, and any dust that enters the hydraulic system when connecting or disconnecting attachments will eventually score hydraulic cylinder bores and valve spool surfaces. Cap all hydraulic couplers immediately when disconnecting attachments. Wipe the coupler face with a clean rag before every connection. Consider sealed cap covers (rather than open male/female plugs) on attachment hydraulic ends when stored.
Running a CTL on crushed aggregate — especially angular crushed limestone or granite — accelerates rubber track wear significantly. The angular particles work into the track grooves and create abrasive wear from the inside. Steel tracks handle this better, but they tear up paved areas and can damage soft surfaces around the plant. The compromise: foam-filled rubber tracks (more durable than standard rubber, less cutting risk) or accept faster wear on standard rubber tracks as an operating cost. A set of rubber tracks typically lasts 1,500–2,500 hours in normal conditions; in angular aggregate, expect more like 800–1,500 hours.
For guidance on track selection and the rubber vs. steel track decision, see our guide on rubber track selection for Canadian conditions.
Before buying any attachment for regular quarry or aggregate use, ask the supplier specifically: what's the steel spec? AR (abrasion-resistant) steel in 400 or 500 Brinell hardness is the minimum spec for anything that contacts aggregate material. Mild steel (A36, which is only 120 Brinell) wears so fast in this environment that the attachment is a liability. Some North American aftermarket manufacturers use mild steel in bucket bodies with only the cutting edge in AR. In topsoil, fine. In aggregate, the bucket bottom will wear through before the cutting edge does.
Canadian suppliers like AMI Attachments (Ontario) and Weldco-Beales (Alberta/BC) supply AR-spec attachments and can quote wear-steel options for customer-specific applications. For standard aftermarket aggregate buckets, Bobcat's heavy-duty rock buckets and the Bradco Rock Bucket series are commonly specified by pit operators in the Prairies and BC Interior.