Coal used for this process is called steaming coal. In 2008 77% of the electricity generated in Australia was produced by coal fired power stations (includes black and brown coals). Some types of black coal are suitable for coke-making.
These symptoms may occur in the back, leg and down to the foot. The most common nerve irritation originating from the lumbar spine is Sciatica. This is an irritation of the sciatic nerve, which can produce pain, numbness, and weakness down the leg along the areas innervated by the sciatic nerve.
Spinal nerves travel up from the spinal cord and leave the spinal canal through holes called the neural foramina. The canal and these exit points can be blocked and cause neck, shoulder, arm, hand pain or weakness. The Cervical spine MRI can look at parts of the lower brain including the cerebellum and brain stem.