Results 1 - 4 of 4

• Design of Underground Mine Seals Under Explosive Events
  7/18/2016 - Contracts and cooperative agreements
  A contract to establish guidelines for mine seal design under static and dynamic loading conditions from gas and/or dust explosions within sealed areas.
• Assessment of Technology for Non-destructive Testing of In-situ Underground Mine Seals
  7/16/2016 - Contracts and cooperative agreements
  A contract to assess four types of existing technology that can be applied to seals in a nondestructive manner under experimental conditions, including radio frequency sensing, ultrasonic sensing, ground penetrating radar, and tracer gas methods.
• Strengthening an Existing 20-PSI Mine Seal with PPG's Polyurea Coated Retrofit
  7/22/2014 - Contracts and cooperative agreements
  A contract to develop a spray-applied polyurea coating system that would upgrade existing 20-psi approved mine seals to withstand blast pressures greater than 60 psi.
• Structural Analysis and Design of Seals for Coal Mine Safety
  5/28/2014 - Contracts and cooperative agreements
  A contract to transfer protective structure design technology from the defense establishment to the design and construction of seals in the coal industry.