Not to drift too far off topic but I am still curious from the game design perspective if this is actually iron or steel. Roman legionaries carried their steel short sword (gladius) and 3-4 iron javelins (pila). The cheap iron in the javelin was meant to bend and break in an enemy shield so the opponent had to drop the shield and make them easy prey for the short sword. But back to topic, I've usually seen 60-70 iron from a single crypt. Coming back into the swamp with the wishbone and buried muddy scrap piles have around 5-12 iron.