In 2011 Stevenson Mining entered into a limited partnership with the historic owner of a mining permit located on land about 10km from Westport known as Te Kuha. Stevenson’s mandate is to explore the resource, develop a mine plan and to apply for the required resource consents and access agreements. During the first half of 2012 exploratory drilling was undertaken to determine the quantity and quality of the coal resource at Te Kuha.
Rotowaro Mine is situated on 2423 hectares west of Huntly, producing 1.3 million tonnes of coal per year, making it the 2nd largest opencast mine in New Zealand. The mine was established in 1978, and is projected to run until 2018. Stevenson Mining recently took over the operations in 2011, and has a positive outlook for the future.
The mine is active 20 hours a day 6 days a week, and employs over 100 site personal.
From June-13 to the year to date Rotowaro Mine moved over 21 million Bank Cubic Meters (BCM) of waste and 3.3 million tonnes of coal.
The majority of the coal is bought by the Glenbrook steel mill and Genesis Power, with the remainder of the coal going to North Island private home and industrial heating markets. Genesis Power Ltd. uses the coal to power the Huntly Power Station.
Rotowaro outsource the blasting to Orica Ltd to guarantee safe, accurate and reliable blasts. Orica use computer technology to program each detonator with a delay time to ensure maximum results are achieved as well as safety.
Once all the detonators are programed, the blasting system will double check the shot to make sure everything is operating as it should. Once the system has checked everything is functional only then can the shot be fired remotely away from the blasting site. The remote detonation ensures that nobody is compromised in the blasting process and everyone is a safe distance away. Inline Drilling are contracted to drill all the blast holes.
The Coal is extracted from the pit and carted along the haul road to the infeed hopper at the blending plant. However if the coal has too much waste in it, it has to go through the wash plant.
At the wash plant the coal and waste is separated; then the cleaned product can be carted to the blending plant.
At the blending plant the coal is put through a crusher and is sorted into piles depending on its quality. The coal is then placed into load-out bins which feeds the trains and trucks, which then is used to transport the coal to the end user.
The Blending plant crushes, sorts and loads the coal onto trains and trucks. Once the coal enters the blending plant it enters a rock crusher that crushes the coal into smaller pieces.
After the coal has been crushed a conveyor belt then transports the coal through a radioactive source that analyses the coals ash, sulphur and moisture content and then stockpiles the coal according to its ash content.
Once the coal has been stockpiled it is then placed into feeder bins which the blending plant operator mixes to create the correct ash content for the end user. Once the operator achieves the correct blend it is stored in a silo which fills the trucks and trains as they pass underneath.
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Levitra samples will receive absolutely free of charge not to turn out. As if you wanted it didn’t wish. It is necessary to pay for everything also our production not an exception to the rules. I understand everything, but isn’t present. I can’t make it.
We offer a full range of in-house mining expertise including:
- mine planning, design and management
- water management
- mine environment, health and safety planning
- overburden removal
- haul road construction
- coal winning
- mine rehabilitation
We draw on our extensive network of expertise to provide:
- mine engineers and managers
- process engineers
- explosives engineers
We use the latest technology to ensure the provision of an accurate, efficient and productive service. We employ our own in-house mining and mechanical engineers to offer specialist technical expertise and apply a high standard of health and safety and environmental procedures to all of our mining operations.
Full engineering workshop services
- Our extensive and wholly-owned fleet of heavy earthmoving equipment is maintained in-house by an experienced full engineering workshop.
- The workshop has specialised in heavy machinery maintenance for over 70 years.
- With over 100 employees, this one-stop-shop carries out all major plant and equipment repairs and maintenance.
- All on-site servicing and breakdowns are managed by a dedicated site mechanical crew working from a purpose-built workshop.
For all enquiries please contact us.