Need Help of Experienced Modder

[Theproracer]

Hello I need someone to help me design a missile silo. This would need to be a tile improvement a worker would be able to build, have a maintenance cost of 10 and be able to re base an ICBM from my nuclear expanded 3 mod. Special unit is (ICBMT). This would function the same as the airbase mod from pick'N'Mix. Limit would need to be 1 ICBM in the silo and be nuke proof but can be pillaged.

Full credit will be given to the person who creates it. Also if you have time I would like to learn myself how to code it so I could do it in the future.

Thanks in advance!

-Theproracer
(Nuclear Expanded 3)
(Chemical Warfare)