the icons are extremely hard to discern even though their very large size. the level of the tool can not be seen because no color is used in items. the best discernable items are ore, which are colored. if you can just color all the items, they would be very quickly recognizable without training. that blue pseudo wire frame icon might have looked cool in the beginning, but is very bad in practice with this many very similar items. also, the shades are incorrect. building material is usually blue, but for some reason screws are not.
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