Argonne’s Advanced Photon Source helps uncover mystery locked in concrete

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?