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.
Calories in a slice of roast beef. That depends of the size of the slice and the thickness of the slice. For example, there are: approx 46 calories in 1 oz, 28g, or average size slice, of roast beef (from average round cuts). approx 92 calories in a 2 oz, 57g, medium thick slice, of roast beef (from average round cuts) approx 138 calories in 3 oz or 85g serving of roast beef (from average round cuts)