iPackets International Inc. (IPKL)

[Ubertino]

Here is an NRC pdf that looks like the background work for iPMine:

http://iit-iti.nrc-cnrc.gc.ca/iit-publications-iti/docs/NRC-48303.pdf

I note:
There are many proprietary technologies [15,16] and a standard based technology called Zigbee [17] for low power wireless sensor monitoring. These nodes currently cost about $200 per node [15,16] but the price of is expected to drop substantially in the near future.
(Having mentioned ZigBee in my messages, I am pleased to note they are aware of it as well.)

And

4. CONCLUSIONS
Advanced heterogeneous hybrid networks proposed here for mine galleries support high bandwidth applications such as voice communication using WLAN mesh networking. To provide QoS we propose to use 802.11e and for handoffs between APs we propose 802.11f. For low bandwidth applications we recommend low power wireless sensor network technology. This wireless sensor technology will be very critical during power outages and mine collapses.

Ref:
http://ragingbull.quote.com/mboard/boards.cgi?board=IPKL&read=253