The Wirtgen 4200 SM cuts lignite 30 cm deep. It also pre-crushes the coal prior to loading.
Cutting, crushing and loading in a single pass. The Wirtgen surface miner makes coal mining simple, economical, eco-friendly and safe.
The new Eagle Pass Mine began selectively mining the thin coal seams with a Wirtgen type 4200 SM surface miner in October 2015.
The 4200 SM from Wirtgen crushes the lignite to a maximum grain size of 10 cm during the mining process.
The Wirtgen 4200 SM continually extracts and loads lignite in South Texas.
The loading conveyor of the 4200 SM can be slewed 90° to either side.
Lignite loading: The driver loads a tandem coal train within minutes in the mine in South Texas; this then drives some 26 km to unload the material at the power plant.