Non-destructive testing (NDT) plays an important role in identifying defects without damaging the component being inspected. Two commonly used surface inspection methods are Magnetic Particle Testing(MT) and Liquid Penetrant Testing (PT). While both methods are used to detect surface-breaking discontinuities, they work differently and are suited for different materials and applications.

Vapor wells play a key role in protecting indoor air quality and supporting environmental cleanup efforts. By providing critical subsurface vapor data, they help ensure safe, informed development of contaminated or previously used land.