All these processes divide the raw coal into the following three categories: 1  Clean coal, having ash content approx. 7 - 9%. 2  Middlings, having ash content approx. 25 - 30%. 3  Rejects, having ash content approx. 65 - 70%.
What is the most important information I should know about Robitussin Head & Chest Congestion (guaifenesin and phenylephrine)? Do not give this medication to a child younger than 4 years old. Always ask a doctor before giving a cough or cold medicine to a child.
1 Ibuprofen or aspirin can be used to relieve tension headaches. However, these medications should be used sparingly.  Tension headaches are usually mild or moderate, as compared to migraines, which cause throbbing pain on both sides of the head.