It looks like there is somehting strange with the research costs.
Most of the researches have a 1 next to each of the typoes of Science and then multiply that by some big number at the end for how much it actually costs.
e.g. : [ 1Red, 1 Green ] x 100
But the research for Deep Mine look to cost: [ 100 Red, 100 Green ] x 50
Instead of what I would expect it to be: [ 1 Red, 1 Green ] x 5000
The Big Deep Mine research looks to be doing someting similar.
I hope I explained that okay.