Journal of Occupational & Environmental Medicine:
There was an error in the methods section of this article. In the Plant Description section, the fourth sentence states, “The expanded material was mixed with additives to treat lawns to improve turf or bagged for use as a soil additive.” The sentence should read, “The expanded material was mixed with additives to treat lawns to improve turf.”
1. Borton EK, Lemasters GK, Hilbert TJ, Lockey JE, Dunning KK, Rice CH. Exposure estimates for workers in a facility expanding libby vermiculite: updated values and comparison with original 1980 values. J Occup Environ Med. 2012;54:1350–1358.