What unit equals 5,760 grains in troy weight or 7,000 grains in avoirdupois weight?

Which carmaker has built the 550 Spyder, the 944 and the Boxster? Which Seattle Mariner hit 56 home runs in 1997? 5,600-year-old samples of which movie snack were found in New Mexico's Bat Cave? 57 people died when which Cascade Range volcano erupted in 1980? Which New York Yankee hit 59 home runs in 1921? 59 Medals of Honor were awarded to U.S. servicemen who fought in which 1900 Chinese uprising? With 59,425 square miles, which is the largest of the original 13 states? Six counties in Ulster make up which political unit?