flint (chert) and steel anecdote... as a Scout (mid 50s), prior to my first troop camping trip we Tenderfoot were taken on an excursion to the coast of the Gulf of Mexico (couple of miles), and scoured the beach area for small 1" size pieces of gray or black flint (chert)... an oyster bar was just off shore, and the formation was attached to a chert deposit... legend was that ancient Timucua Indians were original inhabitants and there was evidence that this was where they napped spear points.... I still had some flint and a piece of 1/2x4x 3/16 steel and some char cloth which I used for demonstration when I taught... as Scouts, we were tasked with carrying it (and matches in match safe) along with some Iodine, a dime, snake bite kit, and roll of friction tape in a WWII bandage pouch on our GI pistol belt....I had a couple of excellent Scoutmasters,,, one a Pacific Theater Combat Marine, and the other an Army officer detached to OSS that served in the Balkans