Blast Furnace

Blast Furnace is a building that produces Iron.

Tapped on a Frontier shore for Darksteel: black, dense, the metal of the Frontier's guns and knees.

Times are for a port with no Warehouse; a Warehouse takes a share off every one of them.

Level	Cost	Time	Gives
1	7,500 4,500 1,000	4 min	66 Iron an hour
2	12,750 7,650 1,700	9 min	145 Iron an hour
3	21,674 13,004 2,889	22 min	239 Iron an hour
4	36,847 22,108 4,912	56 min	351 Iron an hour
5	62,640 37,584 8,352	2.3 hours	483 Iron an hour
6	106,489 63,893 14,198	5.8 hours	637 Iron an hour
7	181,031 108,619 24,137	15 hours	818 Iron an hour
8	307,754 184,652 41,033	36 hours	1,028 Iron an hour
9	523,181 313,909 69,757	3.8 days	1,273 Iron an hour
10	889,409 533,645 118,587	9.5 days	1,556 Iron an hour
11	1,511,995 907,197 201,599 4	24 days	1,883 Iron an hour
12	2,570,392 1,542,235 342,718 8	59 days	2,259 Iron an hour
13	4,369,666 2,621,800 582,622 16	148 days	2,692 Iron an hour
14	7,428,433 4,457,060 990,457 32	370 days	3,189 Iron an hour
15	12,628,336 7,577,002 1,683,778 64	925 days	3,759 Iron an hour