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.
Medications for Back Pain Video. Oral steroids, a non-narcotic type of prescription medication, are very powerful anti-inflammatory medications that are sometimes an effective treatment for low back pain. Like narcotics agents, oral steroids are intended for use for short periods of time (one to two weeks).