Relationship of pH and Conductivity of Heavy Metal Contents under Rainy Condition

pH increases as the conductivity is low in water. Heavy rain can increase the conductivity of heavy metals contents in water which reduce the pH of water.

During heavy rain you would expect a higher reading for conductivity and turbidity on the turbidity measuring equipment. at the same location and during dry days you would expect a different reading with low pH values.

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Mine Waste Management Training in Japan, 2017

Mine Waste Management Short training sponsored by Government of Japan through JICA in co-orporation with the Government of PNG through CEPA, MRA and DMPGM.

The training lasted two weeks and 6 officers from MRA and CEPA attended the training. The training comprise of theory and practicals and site inspections throughout Japan.

The training was a good exposure and skills acquired will be applied in drafting policies to encourage mining with environment friendly manner.This project will continue till 2018.

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Possible Mine Pollution in a Metal Mine

In an event when rain fall, water seepage cause subsidence of overburden materials. Rain water reacts with acid forming rocks and generate acid mine drainage (AMD). The ionized water flows with lose particles of materials known to be sediment runoff which eventually becomes the tributary of a nearby stream. Consequently the pH is reduced at the nearby stream.

Sometimes structures of facilities fail and waste water is released into the environment without proper treatment and this is a concern for environment pollution along the riverine inhabitants. 

In sulfide mines the possible pollution are:

• Acid drainage from mine adit
• Surface exposure to atmosphere and moisture
• Tailing dam gradually eroded by river water
• Bursting of waste rock/tailing dam
• collapse of abandoned dressing plant.

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