Mine WiFi and method

A telecommunications system for a mine with tunnels comprising:

• a plurality of nodes disposed in the tunnels in the mine which provides communication through WI-FI with devices in the mine, each node having an impact resistant housing defining an enclosure, a first radio with a first antenna completely disposed in the enclosure within the housing directed for communication in a first direction relative to the node, a second radio with a second antenna completely disposed in the enclosure within the housing directed for communication in a second direction essentially opposite the first direction, the first radio with the first antenna disposed within 18 inches of the second radio with the second antenna, a switch which provides communication between the first and second radios and an outside entity, the switch passes data between the first and second radios, and a power supply in electrical communication with the first and second radios to power the first and second radios, each enclosure has a shielded cable gland adapted to allow a cable to extend into the enclosure, the housing having an input/out port through which 12-50 V DC is received or sent out from the power supply through a power gland;
• and
• an attachment which holds one node of the plurality of nodes to a tunnel of the mine, the attachment includes a first mine roof bolt and a second mine roof bolt in the roof of the mine, a bag having an opening through which one of the nodes of the plurality of nodes is placed within the bag, a first strap extending from the bag having a first engagement portion that connects to the first mine bolt extending from the mine roof, and a second strap extending from the bag having a second engagement portion that connects to the second mine bolt extending from the mine roof, the bag swinging on the first strap and the second strap when a force is applied to the bag.