Certainly looks like Mark lived life to the full and helped others along the way (30 employees at the mine amongst other ventures). I offer no opinion on the circumstances of his death, just sadness at another loss and I just count myself lucky to still be around when so many of my friends have gone the way of Mark for all manner of reasons.
I probably bite off as much as I can chew a couple of times a year, if I didn't my employer would soon get the idea I was turning down do-able jobs too often. I just wish I knew which 'couple of times' in advance.
Safe flying all.