Hiking

Hiking, exercise in the form of endurance walking. It can range in duration from a few hours to a few days or weeks and can be done on woodland trails, riverbanks, lakeshores, mountains, or city streets. Hikes of more than 1 day involve camping out, and these hikers usually carry tents, sleeping bags, and backpacks with food supplies and changes of clothing.

any impurities. In the converter type of furnace, such as the Bessemer converter, which is used for refining pig iron, air or oxygen is blown through molten metal to burn out impurities; no fuel is necessary since the “blow” itself generates heat. The electric furnace heats the charge externally and so does not contaminate the product.