UNDERGROUND MINES
Patented Air-Cell® technolgy eliminating downtime in harsh conditions.
Trojan TIRECORE is used in Hard Rock, Coal and Potash mines in some of the harshest conditions.
Reusable Trojan TIRECORE ensures no lost downtime due to flats and longer tire life for huge savings. Trojan TIRECORE handles rough floors, sharp rock debris, low seams, steep inclines, wet conditions and long cycle distances at high speeds with heavy loads.
Safety is a priority. Eliminate the explosive danger of air tires by using Trojan TIRECORE: protect your workers while giving them an air-like ride!
Get your lowest tire cost per hour/ton with reusable Trojan TIRECORE. Best for the environment: safe to handle and dispose.
- Potash Scoop, Loader & Hauler
- Coal Shuttle Car
- Hard Rock Scoop, Loader & Hauler
- Multi Purpose Vehicle (MPV) for tunnelling
- Cement Truck (Mobile Concrete Mixer)
- Mine Support Vehicle
- Battery Hauler
- and more…

Tirecore® Underground Mine Examples
UG Potash – Scoop
Underground Potash Mine – Western Canada
Machine Type
Scoop/Loader LHD (4 yd.)
Tire Size & Type
17.5R25 (14.00) – Radial Tire
Site Conditions
Smooth ground conditions. Machines travelling long distances and at high speeds.
Tire Problem
Mine uses the scoop as a load-and-carry vehicle. Load and carry distances up to 25km (15mi.) and high speeds up to 15 kmph (9 mph). Solid tires and polyurethane (foam) filled tires were not able to withstand the heat generated by the long runs and high speeds. Solid Tires would de-laminate and foam fill would revert to liquid. These tire problems had a significant impact on mine production and tire cost per hour.
Trojan Solution
Installed Trojan SO Soft Core in the 17.5R25 radial tire
Success / Outcome
Trojan SO Soft Core has made it possible for the mine to wear out their tires and reuse the Soft Core. The tire wear-out, Soft Core reuse and longer running hours has sharply decreased the customers tire and labor costs as well as significantly increased production. Trojan Soft Core has allowed the mine to achieve by far the lowest cost per hour versus any competing product.
UG Coal – Shuttle Car
Underground Coal Mine – Southeast US
Machine Type
Shuttle Car
Tire Size & Type
14.00-20 Bias Tire
Site Conditions
Harsh underground mining condition with rough floors, steep grades, big ribs and wet conditions.
Tire Problem
Tires are up to 25% overloaded. Tires with polyurethane would start to break down and spin on the wheel, especially when on the grades. This would result in tires usually being changed with 50% tread remaining. Tires would also rib prematurely, destroying the tire and polyurethane fill.
Trojan Solution
Installed Trojan HD Soft Core in the bias tire
Success / Outcome
In most cases, the mine is now wearing out their tires. Trojan has increased the mines tire life by as much as 300-400%. Trojan has also eliminated spinning on wheels. Also, when they do rib a tire, the mine is now able to reuse the Trojan Soft Core – saving huge money!
UG Hard Rock – Scoop
Underground Hard Rock Gold Mine – Central Canada
Machine Type
Scoop/Loader LHD (1.5 yd.)
Tire Size & Type
9.50-20 (7.50) L5S Bias Tire
Site Conditions
Harsh underground mining conditions with rough floor including sharp rock debris, water and heat
Tire Problem
Site conditions often lead to cutting, penetrations and tearing. L5S bias tires with polyurethane (foam fill) were destroyed by underfoot conditions or urethane would revert to liquid due to heat and load which increased tire spend. Frequent underground tire changes incurred significant labor costs and lost production. On average a urethane filled L5S would only last 200 hours.
Trojan Solution
Installed Trojan HD Soft Core into a L5S bias tire.
Success / Outcome
Trojan Soft Core increased running hours by up to 300% per tire. This has dramatically decreased the customer tire and labor costs as well as increased production. The HD Soft Core has averaged 4 uses. This combined with the 300% increase in tire life has allowed the mine to achieve by far its lowest cost per hour versus any competing product.
UG Tunnelling
Underground Mine Tunnelling – Northwest US
Machine Type
Multi Purpose Vehicle (MPV) for tunnelling (articulated tractor trailer combination)
Tire Size & Type
355/65R15 (9.75×15) Radial Tire
Site Conditions
Rough hard rock terrain with significant grade inclines/declines. Typical cycle time of 60 minutes. Typical distance of 1-6 miles (2-10 km) as tunnel extends. Typical 16 hours of operation per day.
Tire Problem
MPV heavily overloaded with prefabricated concrete wall pieces. Site conditions prone to flats daily. Due to severe loads, polyurethane fill was known to break down/fail in similar applications on this machine type. Solid tires would cause heavy shock transmission damage and fail within hours. Average tire service life of 1-2 months.
Unique to the application the tunnel’s circular designed walls and machine tire axle camber did not allow the tire to have a full contact patch/footprint on the ground which it would otherwise have on a flat surface.
Trojan Solution
Installed Trojan HD Soft Core into radial tire.
Success / Outcome
With Trojan Soft Core the tire service life hours have improved significantly up to 24 months (12 times improvement). Trojan Soft Core eliminated flat tire downtime and assisted the tires to carry the heavy loads safely.
UG Hard Rock – Support Vehicle
UG Hard Rock Mine – Cement Truck – Central Canada
Machine Type
Cement Truck (Mobile Concrete Mixer) – Support Vehicle
Tire Size & Type
49×17 Retread – Bias Tire
Site Conditions
Round trips (load/unload cement) of various distances and speeds. Harsh underground mining conditions with rough floor, sharp rock debris and water.
Tire Problem
OEM required a tire for load capacity, but retreaded tire has very little tread depth. Polyurethane would often break down under heavy loads and cycle times. Failures were common. In addition, the bolt together wheels were very time consuming to mount/demount. The mine experienced increased tire costs and loss of productivity.
Trojan Solution
Converted tire to 45×16-20, 36 ply mine tire with deep tread, installed Trojan HD Soft Core and mounted on heavy duty fabricated wheel.
Success / Outcome
The mine tire with Soft Core provides the load capacity required. The gold mine now typically achieves full wear out of the deep tread. They have eliminated both premature tire and polyurethane fill failure as well as costly downtime. The mine has achieved their lowest tire cost by significantly increasing tire life while reusing the Soft Core which has increased productivity.
UG Coal – Battery Hauler
Underground Coal Mine – Battery Hauler – Southeast US
Machine Type
Battery Hauler
Tire Size & Type
Battery end 10.00-15 dual bias tire
Trailer end 14.50-15 bias tire
Site Conditions
Low seam coal mine with wet uneven floor sharp rocky bottom. Mine is running a 50% payload reject rate.
Tire Problem
The bias tires filled with polyurethane were below capacity by 50%, resulting in poor performance with just 60 days service life on a tire! By overstretching the bias casing with polyurethane fill, it caused the tire to crown making it susceptible to impact breaks on the sharp rocky floors. This was a very high cost in tire spend for the mine, plus the additional losses in machine availability and downtime due to premature tire fill failure and therefore productivity was low.
Trojan Solution
Changed to radial tire with Trojan HD Soft Core.
Success / Outcome
Because the Trojan HD Soft Core increases the load carrying capacity of the radial tires, the mine was able to wear out the vast majority of their tires and improve service life by 500% achieving on average 300 days service on a set of tires. Huge gains in productivity and machine availability were realized because the Soft Core filled radial tires were at optimum performance. Soft Core is also reusable, and the mine is saving money and has reduced tire costs substantially.
OTHER TIRECORE® APPLICATIONS
Underground Mines
Reusable Trojan TIRECORE ensures no lost downtime due to flats and longer tire life for huge savings. Trojan TIRECORE is used in Hard Rock, Coal and Potash mines in some of the harshest conditions.
Trojan TIRECORE handles rough floors, sharp rock debris, low seams, steep inclines, wet conditions and long cycle distances at high speeds with heavy loads.
Safety is a priority. Eliminate the explosive danger of air tires by using Trojan TIRECORE: protect your workers while giving them an air-like ride!
Get your lowest tire cost per hour/ton with reusable Trojan TIRECORE.
Best for the environment: safe to handle and dispose.
Tirecore Examples
Mills & Smelters
Trojan TIRECORE is up to 10x stronger than weak polyurethane to carry heavy loads and is resistant to breakdown in extreme heat conditions.
Smelters – Machines typically operate in high heat environments while carrying heavy loads.
Steel Mills – Machines often carry heavy loads, move at fast speeds, travel long distances with road hazards like pot holes, scrap metal, ruts and debris.
With the huge costs associated with production, companies cannot afford downtime due to premature tire failures
Trojan TIRECORE filled tires run cooler than solid tires.
Best safety practice: no air = no explosive force!
Tirecore Examples
Waste & Scrap
Waste Transfer Stations & Scrap Yards are tough on tires.
Trojan’s exclusive L10 Tuff Haul Tire has the deepest tread for long tire life and lowest cost per hour.
Reusable TIRECORE provides an air-like ride for machinery and operators for reduced maintenance costs – unlike hard riding solid tires.
For loaders, skid steers, and forklifts operating in Transfer Stations, MRFs, C&D, Recycling Centers, Scrap Metal Yards, Shredders, Demolition and more…
Tirecore Examples
Material Handling
Trojan TIRECORE provides the “Ride of a Pneumatic with the Stability of a Solid” for forklifts or skid steers.
Air-Cell Rubber flex means closest to air for better traction and longer wear. Trojan TIRECORE is shock absorbing to machine and operator for reduced maintenance costs. Trojan TIRECORE provides longer tire life compared to pneumatic, polyurethane and solid tires.
Preinstalled Trojan TIRECORE tire combos available for Fast Press N Go® Service.
Corporate or Rental Fleets: eliminate flat downtime across your fleet, protect your equipment and improve your customers experience.
Applications include: brick yard, block yard, lumber yard, rail yard, construction, airports and more…