New shavings

Exploration Stage: Abandoned Factory
From: Mr. Black
Description: There are bad rumors about the abandoned factory. Is someone secretly working there? It's a place where even my agents don't like to be monitored. We'll have to see what they tell us before we start investigating. Let's check out the crystal grinder first.
Completed: Hmmm, there is no longer any doubt that crystal polishers have been used recently. Thanks for bringing the crystal polisher to my attention. The color is still vivid, which means it hasn't been long since it fell near the grinder. Let's look into the other evidence surrounding the culprit.