Completed Project Examples:
• Underground equipment pods
Purpose designed for multiple tasks such as man baskets, bunded fuel carriers, hydraulic operation road levellers, roof and rib bolting pods, and special equipment carry pods.
• Ventilation equipment goes here
…Conveyor Coffin seals
…Rated Explosion doors and louvres
…Over Casts
• Pipework equipment
HDE has in-house expertise for multiple piping design disciplines
…Upgrades to process piping designs for coal processing plants
…Fire eater system designs for mining applications
…Mine air and water reticulation
• Large Ventilation Fan
Design and construct including site installation and project management
• Reverse engineering and modifications
• Crushing plant and feeder building
• Belt splice station designs for full plant including 16 conveyors
• Dozer Trap Upgrades
• Belt lifters
Fit-for-purpose designs from hand-operated to hydraulic and crane-mounted solutions. One of our belt lifting designs won a BMA safety award.
• Mobile Winch Assembly
Designed for crusher removal in multiple locations.
• Hydraulic breakers
Hydraulic breaker designed to break oversize coal blocking load bins.
• Belt Reelers and Winders
• Chutes and wear plate designs
• Safety Improvements
Guarding audits, designs, extended handrails, flooring upgrades etc
• Access Improvements
Temporary or permanent solutions

HDE has significant experience with ventilation projects


HDE has significant experience with ventilation projects within the Bowen Basin.  We have completed projects including full engineering design, manufacture, site demolition, installation and commissioning components.
HDE teams up with a number of local companies to provide a full turn-key solution to your engineering needs.  Examples of similar works completed include: –

  • Oaky Creek Mine – Fan 7, complete facility design including fan.
  • Broadmeadow Mine – Main Gates 8, 10 & 11 knife gate and transition duct. Replace existing.
  • Broadmeadow Mine – Main Gate 10 fan facility.
  • Broadmeadow Mine – 70kPa Gag facility.
  • Crinum Mine – Multiple 70kPa ventilation knife gates.
  • Grass Tree Mine – Knife gate duct and gag facility designs for shafts 1, 3, 6 & 7.
  • Cook Colliery Main Ventilation Fan Upgrade.


HDE have provided 3D laser scanning of existing stacker conveyors and bin structures, modelling point cloud data and designing new full height deflector plates and support frames, new spacer pieces and provided as built drawing of existing to meet clients needs.
Upgrades were also made on the bin structures to include access doors, cover plates, bin extensions, flooring, walkways, lighting, head chute and gantry wheel supports.
All designs were RPEQ certified and included compliance with AS 1755-200 Conveyor Safety standards.


HDE has in-house expertise for multiple piping design disciplines: –

  • Upgrades to process piping designs for coal processing plants
  • Fire eater system designs for mining applications
  • Mine air and water reticulation
  • And much more

Weipa, Andoom AF14 Hydraulic Pipe Line, our client required site scanning, modelling of scan data and creation of detailed fabrication drawings for the piping which included: –

  • General arrangement of the facilities including marking plan for the piping
  • Detailed fabrication drawings for each pipe run
  • Complete drawing set that will allow fabrication and installation or the piping to be completed.


HDE have 3D scanned a Jiffy drive and drive motor to design supports, walkways and stairs for our clients.  Detailed designs include: –

  • Support towers for mounting the jiffy above the floor
  • Drive motor supports to prevent the drive motor from spinning
  • Drive and non-drive side walkways and access stairs
  • Detailed fabrication drawings and certification


HDE have experience in-house with design and modifications for chutes, skirts and wear plates:-

  • TCP Access Platforms – site measuring, detailed fabrication drawings and certification.
  • Transfer Chute Hood – site measuring, produce 3D model, produce fabrication drawings and provide dxf files.