Thanks Juli, I get the general idea from the photos. It looks like your cat has a nice perch from which to scan for tender morsels.
Rick, I watched a documentary about an archaeological dig where they used screening trays w/long handles and one pair of braced legs loosely bolted onto the tray. With the tray flat on the ground they would fill it with dirt, pivot it up on the legs and shake it back and forth to remove smalls. I've been thinking this, on a larger scale, might not be a bad approach to screening compost. What do you think? Any more practical ideas?