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@AlanLumsdenMD "Dr Bill Kline retired mechanical engineer Exxon Mobil taking his knowledge to Clear Lake high school after school pumps and pipes club - the Trebuchet catapult building challenge. Gotta figure out the math @pumpsandpipes"
X Link @AlanLumsdenMD 2025-10-14T18:29Z 9090 followers, XXX engagements