Video description In 1971, artist Wolf Vostell wrote a short book called Concretifications, and as evidence of his commitment to the material, he purportedly encased 100 copies of that book in numbered slabs of concrete. Years later, the question became… Is there actually a book inside the 20-pound, two-inch-thick, chunk of concrete?

Video description In this video, see the FALIT failure analysis laser inspection tool from Control Laser Corp. in action.