Radiological apparatus for industrial purposes; X-ray producing apparatus and equipment, not for medical purposes, namely, charged particle linear accelerators for producing high energy x-rays and for x-ray imaging, for use in inspection, materials testing and industrial and security applications; X-ray tubes not for medical purposes; radiology screens for industrial purposes; electric installations for the remote control of industrial operations, namely, electronic cards for processing images, electronic control systems for machines; particle accelerators; nuclear instruments, namely, charged particle linear accelerators for producing high energy x-rays and for x-ray imaging, for use in inspection, materials testing and industrial and security applications, scintillators