The extraction process to remove the lead from the sulfur is very simple, thus lead has been extracted from Galena since the earliest times.Galena from certain regions is rich in silver, and some specimens may contain as much as 20 percent silver. Because of this, silver-rich Galena is also an ore of silver.
Being exposed to sunshine will also increase your levels of vitamin D. Hiking is a cardiovascular activity, depending on how hard you push yourself during a hike, and thus has benefits for your cardiovascular system, such as reducing the chances of heart disease, and increasing your overall fitness.
How much does hiking equipment cost? One of the great things about hiking is that you need relatively little equipment to do it. The only real costs might be a good pair of hiking socks ($10-$20) and a pair of hi â¦ king shoes or boots ($100-$400).Even these items may be optional depending on the length and difficulty of your hike.ne of the great things about hiking is that you need relatively little equipment to do it. The only real costs might be a good pair of hiking socks ($10-$20) and a pair of hi â¦ king shoes or boots ($100-$400).