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.
In-Depth From A.D.A.M. Patients should understand that most people who have sudden low back pain, even with sciatica, have a high likelihood of substantial improvement over the first month. The most commonly prescribed medications for the treatment of back pain are nonsteroidal anti-inflammatory drugs (NSAIDs). Evidence suggests that short-term use of NSAIDs brings effective relief in patients with acute back pain.