The basic principle for coal preparation is to first liberate the coal particles from the gangue (quartz) and then, by applying different water based techniques, separate the coal particles and gangue particles.
Acetaminophen in the Treatment of Acute Low Back Pain. For low back pain, acetaminophen can be effectively used as an analgesic (or pain killer). Doctor-written article on acetaminophen as a pain reliever for lower back pain.
Lavender oil is an especially good remedy for lower back pain. A bath with lavender oil and Epsom salts is one of the best ways to loosen up the hips, lower back, and pelvis, reducing pain and increasing flexibility and range of motion.