A unit of wheat weighed more or less around 0.15 catties. It was not a constant value either.
This was one of the rules of the game panel's calculation system. Some of the wheat had a higher moisture content, so less of it would be weighed. If the moisture content was lower, then more of it would be weighed.
However, in general, based on the ratio after the wheat was ground into flour, nine units of wheat would produce around a catty of flour. This was a sufficient amount of carbohydrates for an adult human's daily activity in the wasteland.
To excavate one unit of iron, a mine was needed. People who were fast enough could excavate 14 units within an hour, whereas the slow ones could only manage 8 to 10 units.
Therefore, as long as one excavated for six hours every day, by calculating based on an average of 10 units, one could obtain 60 units of iron.
