The only thing in common between EXT and PEN is Uranium ......

The only thing in common between EXT and PEN is Uranium ... other than that chalk and cheese
"Extract Resources, way back when, did a 10:1 when they were ~ 2.2 cents, so 22 cents post." - what was the MC at that time?
"It was making out like a sleepy dog for a few months; then went on to over $10, before the Chinese made an offer in the $9 range." - Massive difference between EXT and PEN. The amount of U EXT had at time of T/O was many many multiples of what PEN has. The production figures EXT was going for was 10m+lb/pa. Quality management knew what they were doing and how to extract the U. EXT was/is a beast compared to little ol' PEN hence the Chinese (who don't think about the next 5-10 years but the next 50-100 years) bought EXT
"Lesson for me: it was at the beginning of a Bull Market" - PEN also increased in value during these times, but the difference in quality and quantity stood out