I'd make the weight of the gold or silver column much more narrow. You only need about 5 character spaces to record that. I'd then increase the width of the location column because you might want to be more detailed about that and need more room.
The nice thing about the spreadsheet is it's highly manipulative. In two weeks if you want to make any column narrower or wider, add a column you forget, or delete one you don't like, it's easy to do. You can tell it to sum the values in a given column, like the weight, and you'll have the total weight of the recovered metal. You could even put in a formula that would calculate the weight in grams to penny weight, put in the price of spot gold for the day and it'll tell you how much gold (or silver) you have at the current gold price. You'd need to put in a formula for the various purities of the gold when doing the total value.
Betcha Erik would have a good way to do that. Jim