For geological exploration, power management and control systems, and more, various Energy companies utilize PICMG specifications.  This includes CompactPCI Serial, CompactPCI, and MicroTCA for the modular high-performance backplane approach.  COM Express is often used in smaller or portable systems while the backplane-based versions and motherboard-based SHB are employed in many rackmount systems.  With ruggedized implementations available for all of the specifications, they can be used in environments that need to be protected from shock/vibration, salt fog and moisture, extreme temperatures, etc.