Rock bolt assembly having an indicator

A rock bolt assembly comprising:

• two shaft sections, including an inner shaft section arranged at a dead end of the rock bolt assembly and an outer shaft section having a head at a live end arranged at the live end of the rock bolt assembly, the outer shaft section being made of an electrically conductive material;
• a coupler configured to couple the two shaft sections together at proximate ends, a dead end of the outer shaft section and a live end of the inner shaft section;
• an electrical conductor insulated from the outer shaft section and extending from the dead end of the outer shaft section to the head at the live end of the outer shaft section;
• an electrical contact arrangement disposed at the dead end of the outer shaft section, the electrical contact arrangement configured to electrically interconnect the outer shaft section and the conductor when the inner and outer shaft sections are coupled;
• and
• electrical terminals provided at the head and connected respectively to the outer shaft section and to the conductor, the electrical terminals being interconnected when the outer shaft section and the conductor are electrically interconnected.