There are three i can think of, though Active Mining is not one of them.
Active Mining doesn't manufacture 28nm chips.
Active Mining doesn't manufacture *ANY* chips.
The closest to chip manufacture Active Mining has gotten is Ken's promise to have 55nm chips sometime this spring.

But then he also promised to have 28nm chips sometime last year.
How'd that work out?

Eduardo out.

*Active Miners!  Your internet is broken.  Fix it so I won't have to post things twice!