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.
Sinusitis (Sinus Infection) Treatment. Over-the-counter (OTC) or prescription decongestant nose drops and sprays are effective in treating nasal congestion. They should be used for no more than two or three days. If you use these medications for longer periods, they can lead to even more congestion and swelling of your nasal passages.