Thanks, Harvey for posting the summary. Here is the online abstract from the Wilderness & Environmental Medicine website: Lightning Multiple Casualty Incident in SeKi

Here is a WZ thread that mentions the Sandy Meadow Lightning incident: Thunderstorms on Whitney?
Alan K's information in that thread was deleted from the WPSMB when it was originally posted, so it is good he re-posted it on WhitneyZone. It discusses the current condition of the hut and its lightning abatement measures that were built in following the 1990 strike.

Here is another covering the July 14, 1990, Summit Hut Lightning strike: Lightning Lesson