Old TV tubes converted into radiation-shielding material
link-
http://mdn.mainichi.jp/mdnnews/news/20120314p2a00m0na016000c.html
-----------------------------------------------------"Shimizu Corp., a general contractor in Tokyo, and R Japan Corp., a manufacturer of eco-friendly products in Ginowan, Okinawa Prefecture, developed concrete and waterproof materials, respectively, using television tubes ground into a form that can help shield against radiation. (SHMUF) Pink, $4.24 .