You’re clearly leaning towards a supernatural or a sci-fi thriller genre in your story, let that guide you but don’t religiously adhere to any specific paradigm or definition (Blake Snyder, Monster in the House, his sin…) just yet – at this early stage it’s best to focus on the main character, his motivation and goal.

Why is it so important for this particular operations manager to solve the mystery? Is there more than his job at stake? Could he have a brother or sister working in the mines who he must protect?

Secondly, as Richiev wrote, the logline is unclear. Define the event that motivates the main character to take action – “…recent events…” is too vague and unspecific. It’s also unclear how he knows the mineral is otherworldly and it’s not clear what he intends to do about it.

In general, producers need to know these elements in order to want to read your script. Don’t be afraid of revealing the character’s motivations and goals in a logline – that’s precisely what a logline is meant to do.