Dollar silver. The US Mint continues to make silver $1-denomination coins, but these are not intended for general circulation. The quantity of silver chosen in 1792 to correspond to one dollar, namely, 371.25 grains of pure silver, is very close to the geometric mean of one troy pound and one pennyweight. In what follows, "dollar" will be used as a unit of mass. A troy pound being 5760 grains and a pennyweight being 240 times smaller, or 24 grains, the geometric mean is, to the nearest hundredth, 371.81 grains. This means that the ratio of a pound to a dollar (15.52)
Distillers grains grain, called "spent grain" for the removal of simple sugars and starch, can then be sold as a by-product. The conversion rate of grains to ethanol and distillers grains varies with the different types of grains and the process used. The details are outlined below: Distillers grains Distillers grains are a cereal byproduct of the distillation process. Brewer's spent grain usually refers to barley produced as a byproduct of brewing, while distillers grains are a mix of corn, rice and other grains. There are two main sources of these grains. The traditional sources were from brewers. More recently, ethanol biofuel