STEP #4: CLASSIFY AGAIN

NOW TAKE YOUR BLACKSAND AND SPOON IT INTO YOUR WINDOW SCREEN SIZED SEIVE.
SHAKE THE MATERIAL UNTILL ALL THE SMALLER MATERIAL HAS FALLEN THROUGH
LEAVING YOU WITH ONLY THE LAGRER  COURSE SAND AND SMALL PEBBLES.

CHECK FOR ANY PICKERS YOU MAY HAVE MISSED AND PLACE INTO A SEPERATE CONTAINER.