/EINPresswire.com/ The Micro Sensor Photonics (China) engineering team can put together a package for: Communications - with 4, 8 or even 16 of the trapped miners at a time. This would use the existing MSP system with a hybrid cable - metal and fibre optic elements together, with DC power at low voltage. All the components would be small - the cable taking little space in the narrow access boreholes, small micro phone, thinner than a pencil and small earphones, plugged in, in series to the cable underground. No conventional switchboard would be needed underground. ther multimedia could also be supplied and some lighting.

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