Game data updates to the wiki have been started.
A system has been added that will automatically add divination cards and other items to the item acquisition sections where appropriate. Entries added by this system will be shown as automatic in the item acquisition section.
Some pages will need to be updated to include
upgraded_from_disabled=true if they are not eligible for the system.
Some further details on what needs to be done can be found on Path of Exile Wiki:To-do list/Automatic upgraded from and issues can be posted on the talk page.
20% increased Mine Throwing Speed if you Detonated Mines Recently
You gain 4% increased Area of Effect for each Mine
Mines have 20% increased Detonation Speed 
Bomb Specialist is a notable Ascendancy passive skill for the Saboteur. It grants increased area of effect per mine placed, increased mine detonation speed, and grants increased mine throwing speed and damage if you detonated a mine recently.