Manufacturing commercial phosphate fertilizer. Rock phosphate is the raw material used in the manufacture of most commercial phosphate fertilizers on the market. In the past, ground rock phosphate itself has been used as a source of P for acid soils.
Chronic knee pain is often attributed to inflammatory arthritis associated with an autoimmune disorder of the joints. Occasionally, knee pain is a symptom of an infection or bone tumor. Pain relief drugs are used as the primary treatment for knee pain. However, mild to moderate knee pain responds to drug-free treatments. Natural treatments can easily alleviate acute knee pain.
However, there are several options your doctor may suggest. Rest your knee. If your pain is the result of an injury or overuse, the doctor may ask you to rest your knee for a period of days or weeks. This will help inflamed areas return to normal so that your pain will subside.