Strange quark
The first strange particle (a particle containing a strange quark) was discovered in 1947 (kaons), but the existence of the strange quark itself (and that of the up and down quarks) was only postulated in 1964 by Murray Gell-Mann and George Zweig to explain the Eightfold Way classification scheme of hadrons. The first evidence for the existence of quarks came in 1968, in deep inelastic scattering experiments at the Stanford Linear Accelerator Center. These experiments confirmed the existence of up and down quarks, and by extension, strange quarks, as they were required to explain the Eightfold Way.
Keane Wonder Mine
The location was discovered by a miner named Jack Keane. Keane and a partner named Domingo Etcharren had scouted the area, called Chloride Cliffs, and had located a potential silver mine. Etcharren eventually left while Keane stayed behind to scout the area more thoroughly. As Etcharren was leaving he noticed an outcropping of quartz, which can often be found near gold deposits. When Keane investigated further, he discovered gold. Keane named the find "Keane's Wonder" and the two miners quickly sold an option on the claim to a New Yorker named Joseph DeLamar.