Organized endurance riding as a formal sport began in 1955, when Wendell Robie and a group of equestrians rode from the Lake Tahoe area across the Sierra Nevada Range to Auburn in under 24 hours.dditional awards are usually given to the best-conditioned horses who finish in the top 10 for distances of 50 miles (80 km) or more. The Best Conditioned, or BC award is generally more prized than finishing first, as it is determined by a combination of speed, weight carried, and veterinary scores.
Only materials containing iron, cobalt, nickel, or a few other rare elements are noticeably magnetic. Public Domain Image, source: NASA. Not all metals are magnetic. Actually, it depends on what you mean by the word magnetic. There are four basic types of magnetism that a material can have: superconducting, diamagnetic, paramagnetic, and lastly ferromagnetic. Superconducting materials are strongly repelled from permanent magnets.
Ferromagnets. A ferromagnetic material is one that has magnetic properties similar to those of iron. In other words, you can make a magnet out of it. Some other ferromagnetic materials are nickel, cobalt, and alnico, an aluminum-nickel-cobalt alloy.