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3:15 - Chapter 1 - The california gold rush
7:15 - Mid roll ads
8:45 - Chapter 2 - The little known history of chinese miners
12:15 - Chapter 3 - Buffalo soldiers ; not just a reggae song
14:55 - Chapter 4 - John muir ; the father of our national park system
19:25 - Chapter 5 - She can do it
21:15 - Chapter 6 - A magnetic place
23:05 - Chapter 7 - A changing landscape
25:35 - Conclusion