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mining methods - UCML open cut
Marion 8050 Dragline
removing overburden
The mining sequence is a simple process of clearing surface vegetation, stripping and stockpiling any available topsoil for future use and then drilling and blasting of the overburden. The overburden is then removed by a dragline to expose the Ulan coal seam.
The coal is then blasted and removed in two strips, above and below a clay band by loader and truck. The trucks transport the coal to the Dump Hopper where it is tipped to a crusher located below. The crushed coal is then transported by conveyor to the Run of Mine (ROM) stockpile, where it is picked up by a reclaimer and conveyed to the coal handling preparation plant (CHPP). Product coal is stockpiled prior to transport by rail to Newcastle Port or Eraring Coal Loader for supply to the Eraring Power Station.
Cat 994 Loader loading coal
onto Unit Rig haul truck
The clearing of the land ahead of mining is kept to a minimal extent to ensure compliance with UCML Flora & Fauna Management Plan and all salvaged topsoil is immediately directed to new areas undergoing rehabilitation or stockpile for future rehabilitation areas. Direct placement is preferred to minimise soil handling which reduces the impact of soil structure degradation
Blasting can occur between the hours of 9.00 am to 5.00 pm Eastern Standard Time (EST) Monday to Saturday. Blasting is restricted during adverse meteorological conditions to minimise potential impacts on private neighbouring residents. Each blast undergoes a detailed design in order to maximise the blast efficiency, minimise the dust, fumes, vibration and air blast, and ensure compliance with site specific blasting conditions.
Open Cut Equipment
1 x Marion 8050 Dragline (47 m3 capacity)
2 x Cat 994 loaders
3 X Unit Rig
5 x 785 Cat trucks
1 x IR Overburden Drill