OK, tank is very nice and I'm caught up in thread. A tip for next time when crushing lump charcoal or even tree fern. You will need a heavy SUV/truck; my Toyota FJ Cruiser works fine.

Place material to be crushed in a high count (400-600 TC) cotton pillow and zip tie it close. Don't overfill, you want it to fill as if pillow inside only. Then drive back and forth over it like 6 times. Check for "doneness" and if happy, just cut zip tie and bag results. Remember to wear breathing protection if dealing with coal lumps. All done in couple minutes with no hammering !