mined
v.v. the past tense of digging deep into the ground to find valuable things like coal, gold, or diamonds. It can also mean taking a lot of useful information from a source.
v. the past tense and past participle of 'mine'; refers to the extraction of minerals or other geological materials from the earth. In a figurative sense, it describes the systematic extraction of data or information from a large source.
They mined coal in this valley for over fifty years.
The researchers mined the historical archives for any mention of the lost settlement.
Once the mountain was extensively mined for its copper deposits, the local economy had to transition toward tourism and sustainable land management to survive.
The verb is transitive and requires a direct object, whether referring to physical minerals or abstract data.