HI TOM, I'VE BEEN GOING THROUGH THE SAME THING; I AM LAYING A 50 SQUARE METRE GRAVEL DRIVE AND AFTER HOURS OF SEARCHING I'VE COME UP WITH THIS.... CUBIC METRES X 1.6 = TONS WITH REGARD TO COMPRESSION RATIOS, AND GOOD FRIEND WHO HAS BEEN IN THE BUILDING TRADE FOR MANY YEARS SAID, IN GENERAL IT IS ABO...
