Refinery Manager's Log is a book that can be found in Dishonored.
[Excerpt from a work log]
The tankers marked "Batch B" coming from the Whalehouse slaughteryard need to be connected to the deeper pipe-row ONLY. These barges contain blubber from juvenile whales and have to undergo a different refinement process to ensure the same level of potency. We need to get the tankers emptied and back out to the Whalehouse as fast as possible.
This book can be found outside the Greaves Refinery, in a blocked-off room next to the stair control room during the mission, The Flooded District. It can only be accessed through the ceiling near the entrance.