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.
Research shows that hiking has a positive impact on combating the symptoms of stress and anxiety, says Gregory A. Miller, PhD, president of the American Hiking Society. Being in nature is ingrained in our DNA, and we sometimes forget that.
The reasons why are simple: They enhance your stability and provide support on all types of terrain. Trekking poles and hiking staffs will not decrease your overall energy expenditure since you'll be using your arms more than you would when walking without poles. They do, however, help distribute your energy usage in a way that can help your hiking endurance. Shop REIâs selection of trekking poles and hiking staffs.