In 2003 ownership of Rolls-Royce plc was passed to Rolls-Royce Group plc incorporated 21 March 2003 which issued its own new shares for payment to the previous shareholders. In 2011 in the same way Rolls-Royce Group plc passed ownership on 23 May 2011 to Rolls-Royce Holdings plc a wholly new company incorporated 10 February 2011. Rolls-Royce plc remains the principal trading company. Rolls-Royce Holdings plc, like its immediate predecessor, is merely a holding company.
1 Crimson = 1.1 tons (2200 lbs.) per cubic yard. 2  Rock (57 & 89) = 1.2 tons (2400 lbs.) per cubic yard. 3  Lime Rock (919) = 1.25 tons (2500 lbs.) per cubic yard.  River Rock (all) = 1.325 tons (2650 lbs.) per cubic yard.
1 Crushed stone is quoted at a weight of 2700 pounds per cubic yard. 2  Your stone dealer tells you he has a truck that can deliver 20 tons of stone per load. 3  You need to know who many cubic yards that comes out to.he math to determine how many cubic yards of crushed stone you will need for a given number of tons follows: 1  Number of tons you need X 2000 pounds per ton = Number of pounds. 2  Number of pounds / pounds per cubic yard of material = Number of cubic yards needed.