To get the active spread-sheets to work you MUST insert a number in each of the "adjustable variants", otherwise you will not get a complete answer when you press "calculate"
Official announcement: The Victorian hay Press Owners Association, 5th August 1944
But believed to have been in existence circa 1942 refer history page on web site.
Then, Fodder Conservation Operators Association Sept. 1956
Then, Australian Agricultural Contractors Association Inc, July 2007
PO Box 1883 Bakery Hill, Ballarat, VIC 3354
Web site - www.agcontracting.org.au e-mail - info@agcontracting.org.au
ABN 71 516 754 008 Registered address - 400 Froons Rd BUNNALOO NSW 2731