As of June 1 2013...
Unbuffed Workyards:
1) Copper Mine 3 - 1.037gc/hr ... 2) Marble Mason 5 - 0.933gc/hr ... 3) Copper Mine 2 - 0.900gc/hr
Workyards Buffed with an Aunt Irma's Gift Basket (2x for 9hrs):
1) Gold Mine 3 - 4.924gc/hr ... 2) Gold Mine 2 - 3.946gc/hr ... 3) Gold Mine 4 - 3.402gc/hr
Workyards Buffed with an Exotic Fruit Basket (3x for 18hrs):
1) Gold Smelter 5 - 2.822gc/hr ... 2) Coinage 5 - (-0.278)gc/hr ... 3) Gold Mine 4 - (-0.664)gc/hr
...
As of May 1 2013...
Unbuffed Workyards:
1) Copper Mine 3 - 1.069gc/hr ... 2) Marble Mason 5 - 1.033gc/hr ... 3) Copper Mine 2 - 0.904gc/hr
Workyards Buffed with an Aunt Irma's Gift Basket (2x for 9hrs):
1) Gold Mine 3 - 5.062gc/hr ... 2) Exotic Wood Sawmill 5 - 4.002gc/hr ... 3) Gold Mine 2 - 3.976gc/hr
Workyards Buffed with an Exotic Fruit Basket (3x for 18hrs):
1) Coinage 5 - 1.778gc/hr ... 2) Gold Smelter 5 - 0.888gc/hr ... 3) Gold Mine 4 - 0.324gc/hr
...
*All results are based on net value calculations*
For up-to-date results of all workyards, follow this link http://tso.majordesigns.ca/US1/value_calculations.html
~Just_n