Instead of iron nails I use wooden stakes, so these pieces don't use any materials other than wood in their creation. (creativeboom.com)
The legionnaire feels for the depression at the front of the wrist, places a spike in the depression, and quickly drives a heavy, square, wrought iron nail through the wrist and deep into the wood. (redeeminggod.com)
While using interactive clickers during a unit on the conservation of matter, Crumrine found that 86 percent of his students incorrectly thought that the mass of a pile of iron nails in an open container would remain the same as the nails rusted, failing to take into account the additional oxygen. (discovermagazine.com)