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.
One of the most important decisions that hikers need to consider is footwear. Hiking is, obviously, an activity that can put a great deal or wear or strain on the feet. This can affect not only the feet, but also how the entire body feels, and can make the difference between an enjoyable hike and a miserable one. For most hikers, footwear choices boil down to two options. These options are walking shoes and hiking boots.