Mary Hammons

Human Resources Generalist

Nick Hildebrandt

Process Engineer

Kristen Koral

Site Manager - Sapphire

Sahar Seifpour

Environmental Sustainability Specialist

Tyler Boisseau

Production Manager

Claire Lautman

Electrical Engineer I

Mark Giustino

Human Resources Manager

Stephen Lord

Maintenance Planner

Jason Prosser

Purchasing Manager

Jessica Pierson

Plant Controller

Michael Gardner

Technical Services Manager

John Zajakala

Cement Development Engineer

Jesus Eduardo Perdomo Mendoza

Production Supervisor