Mining skills questions

[Spartanius]

Skills modifying ore extraction:

Advanced materials collection (+3% RO production per planet per rank. 10% if you are trader specialist)
Interstellar Commerce (+10% resource production per rank on all planets with a matter transmitter)
Power Generation (+2% resource production per rank and factory efficiency per rank)



Other things modifying ore extraction

Specialty - Trader (starts out with 10% RO extraction where other races have 0)
Building - Orbital refinery (10% increase to a planet's resource production)


Ok so we now understand that each rank of advanced materials collection allows access to more of an already decided value of a planet rather than multiplying a base value. This makes the skill 10 times more efficient.

Question 1:

Is this also how other skills work? Are they just allowing access to an unseen value or do they multiply a base value? Skills: Power generation and interstellar commerce.

Question 2:

If they are modifiers and multiply the planets base value do they multiply the value which you already have access to or do they multiply the planets complete value? For example if a planet has a value of 100 RO and you are able to access 10% or 10 of it right now and you have a matter transmitter on the planet allowing 10% more production does that give you 100*1.1 or does it give you 10*1.1 ?

Question 3:

Does this work the same with an orbital refinery? Does it reveal/allow access to more of a value or multiply a base value.

Question 4:

Do any of the skills modify the bonus given by an orbital refinery? If not I think the orbital refinery needs a major bonus. Give it like 50% or 100% to mineral production.

Question 5:

In version .75b didn't advanced materials collection modify both CO and RO collection? Does it not do this anymore?