Richard Spikes was an African-American inventor created with  inventing the turn signal and the beer keg tap. Not a lot is known  about his personal life except that he was â¦ declared legally blind  in 1962, the same year he passed away. Answered.
There are 56 calories in 1 thin slice of Roast Beef. Calorie breakdown: 60% fat, 0% carbs, 40% protein.
The fat and calorie counts of ground beef differ based on the fat content that you'll see on the label. For example, 3 ounces of 80 precent lean ground beef has about 210 calories, while the same size portion of 85 percent lean has about 170. A serving of 90 percent lean ground beef has about 145 calories.