Sieving equipment.
1: carrier bag of salting detritus, 2: chip-frier basket (or fingers) to remove coarse detritus from bucket of water. 3: kitchen sieve to pour residue through. 4: fine sieve to pass residue through 2nd time (or lace curtain). 5: polystyrene date tray with sieved material (Leave an hour for snails to crawl to surface before search with magnifier.).