XROC

Drywall joint compound, wallboard joint compound; non-metallic jointing materials, namely, jointing materials for use with mineral boards; all for use in connection with x-ray blocking materials

Wallboards not of metal, namely mineral boards; plaster; ceiling tiles not of metal, made of mineral board; ceiling boards not of metal, namely mineral boards; wall mineral boards not of metal; all for use in connection with x-ray blocking materials