Atlas Copco offers a comprehensive line of four-wheel-drive articulated LHDs (Load, Haul and Dump) for underground mining and for tunnelling projects. The Atlas Copco line of diesel and electrical loaders ranges from the 3.6-tonne tramming capacity of the ST2D to the 15-tonne payload capacity of the ST1520. All models are available with Atlas Copco's patented SAHR fail-to-safe brake system for reliable braking and for long component life. Additionally, each model includes options that complement the many standard features.