Scope of Supply
The Grasstree project involved the design, supply, testing, and delivery of a two-way tracking and messaging system to the mine. Today, the solution now provides coverage for main travel areas in both Grasstree and the Southern workings with the ultimate goal of achieving near 100% underground coverage, including across the mine longwall face. Coverage is provided for two-way messaging and reverse tracking with the direction of travel.
Currently included in the Grasstree solution are:
- 575 Reverse Tracking Messenger Cap Lamps
- 890 RFID Tags (Locator and Vehicle/Asset)
- 52 T2 Nodes
- Two 3-Fibre Port Nodes
- Three T3 Nodes
Four Portable Nodes
- 48 UPS
- 40 Ranger VoIP Handsets
NLT’s Digital Mine™ software is designed to sit on top of the NLT Digital Network™ and allows on-site users send and receive messages to underground miners. It monitors the location of personnel and equipment, allowing operators to search for people and assets, or particular skill sets, on the mine site.
The project was delivered in two stages. The first was the implementation of IS Messenger camp lamps and tags, initially installed with a non-IS Wireless Access Point (WAP). After the Node received IS approval, all non-IS components were replaced. The final IS Node as an integral IS UPS patch panel with fibre in and out, and is supplied by a 12V power supply.
The original fleet of Messenger™ Cap Lamps have been fully replaced with Reverse Tracking Messenger™ (RTM) Cap Lamps. To enable NLT’s unique reverse tracking method, RFID tags are situated throughout much of the underground and surface operations.