Obsada:
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Jerry Hoffman
Charles Sternberg
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Jennifer Aguilar
Female Grad Student
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Michael Ashcraft
South Dakota Scientist 2
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Michael Ashcroft
South Dakota Scientist 2
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Paul Burmaster
North Dakota Collector #1
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Paul W. Burmaster
North Dakota Collector
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Albert J. Burnes
Male Grad Student
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Daniel Coldham
Worker - Phosphate Mine
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Toni Dodd
Pamela Everhart
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Derek Gamble
Worker - Phosphate Mine
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Chris Glaze
Michael J. Everhart
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Curtis Hawkins
Worker - Phosphate Mine
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Cheryl Hunter
Dr. Betsy Richards
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C.J. Johnson
Road Worker
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Efi Kamara
Worker - Phosphate Mine
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Doug Kisgen
Levi Sternberg
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Chris Koeberl
Netherlands Scientist
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Kathleen Leighton
Texas Collector 1
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Brian Lemmons
Worker - Phosphate Mine
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Michael McConnohie
George Sternberg
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Nissam Mina
Forman - Phosphate Mine
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Casey Myers
Texas Collector 2
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Dan Nichols
Martin
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Frank Novak
George Sternberg
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Liam Owen
Photographer
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Shari Phillips
Camping Mother Voice
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Thea Phillips
Camping Daughter
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James Rudnick
Australian Scientist 1
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Charlotte Salem
Camping Daughter
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Joe Salem
Camping Father
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Liev Schreiber
Himself - Narrator
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Michael Sorich
South Dakota Scientist 1
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Jeffrey Staab
George Sternberg
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Kevin Stidham
Australian Scientist 2
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Walley Thornton
Reporter
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Jack van Dijk
Netherlands Scientist
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Caroline Vinciguerra
Mom
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Christopher Wheatley
North Dakota Collector