Social Construction - Lack of... All Construction

Is there only one improvement which accepts social construction "Core Mine"? Carbon based tech tree?

 

There seem to be lots of bonuses for Social construction, though lack of improvements I can build next to them.

 

All Construction should minimally accept construction from social construction, if not both (even it if's half the bonus).

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All construction give to all but Social and Ship give to none except themselves. It raise a question why would you build Deep Core Mine in the first place since it give only 1 Social while Spaceport give All production which benefit from Factory too. Each level of Spaceport also add 1 All production. Unless you not interest to put that planet into ship construction and it has tile that improve Social one. Deep Core Mine need to has lower construction cost. Like half of Spaceport so it can jumpstart new colony faster.