Refining

Algeria has oil refining complexes.

Algeria wants to control its hydrocarbons refining, too.

Belarus derives export revenue by refining Russian crude and selling it at market prices.

Ships loaded with raw materials go to other nations for the complex process of refining or smelting.

The students collaborated on their project, brainstorming and refining their ideas in their discussions.

I'm refining my skillset.

Then after that process which Culverwel describes as so many strainings, refinings, and clarifyings, the mind is prepared for a true insight into the real nature of the world by way of intuition.