Al Stewart reached the register in Miller's Cave, Roanoke, County, Virginia via the climb-down from the balcony of the Ante-Room. The register was a large plastic tube with a screw-on cap. When Stewart opened the register, it exploded in his face. On a prior trip, a caver had found the register book damp and had applied fresh carbide to dry it out. Stewart was wearing glasses and had only he beard singed and the end of his nose blistered.
NSS News, December 1989 (Part 2) V47N12, Page 317.
Al Stewart "A new cave hazard" Michinana Caver Oct. 1976.
No analysis has been done.