going back a couple of yearsi know of some large u/g mines...

going back a couple of years
i know of some large u/g mines having explored
the idea of 'rfid' technology being implimented
mainly for vehicle tracking and time keeping, (stop the
early finishers), but have been put on the back burner
due to cost...

as long as the leaky feeder system was installed
in most parts of the mine and radios in machinery
maintained, that was considered sufficient...

there was a system by 'minsite tech' that incoropates
transponders in cap lamps available when i was
involved in the industry but i have never seen
it in operation in WA as I have been to
a few mines, cost and high maint issues were
the main reasons...

any 'system' than incorporates 'electronics'
u/g has to be bullet proof and ultra reliable...