1 ► Alabama, Autauga County, Prattville — Doster Road Artesian Well House —

2 ► Alabama, Bibb County, West Blocton — The Railway System —

3 ► Alabama, Bibb County, West Blocton — Welcome to West Blocton Coke Ovens Park —

4 ► Alabama, Bibb County, West Blocton — What Are Coke Ovens? —

5 ► Alabama, Blount County, Blount Springs — Blount Springs —

6 ► Alabama, Calhoun County, Oxford — Charcoal Production at Caver-Christian-Davis Farm — AD 1865 to AD 2000 — Choccolocco Park Interpretive Trail —

7 ► Alabama, Choctaw County, Gilbertown — First Oil Well In Alabama —

8 ► Alabama, Colbert County, Tuscumbia — Petrified Conifer Tree / Petrified Lycopod Tree Stump —

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9 ► Alabama, Dallas County, Cahaba — Missing Pieces —

10 ► Alabama, Jefferson County, Birmingham — King's Spring —

11 ► Alabama, Jefferson County, Birmingham — Lane Park —

12 ► Alabama, Jefferson County, Clay — The Cahaba Heart River of Alabama —

13 ► Alabama, Jefferson County, Hoover — Shades Crest Road Historical District —

14 ► Alabama, Jefferson County, Hoover — Shades Crest Road Historical District —

15 ► Alabama, Lauderdale County, St. Florian — Shoals Creek Preserve Tract —

16 ► Alabama, Mobile County, Dauphin Island — Energy from the Sands of Time —

17 ► Alabama, Mobile County, Mobile — Caldwell Field —

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18 ► Alabama, Morgan County, Lacey's Spring — Lacey's Spring —

19 ► Alabama, Shelby County, Montevallo, Aldrich — Alabama Coal Mining —

20 ► Alabama, Talladega County, Sylacauga — Sylacauga Marble —

21 ► Alabama, Tuscaloosa County, McCalla — Roupes Valley Iron Company — The Tannehill Furnaces (1859-1865) — Hillman's Bloomery Forge (1830) —

22 ► Alabama, Tuscaloosa County, McCalla — Tannehill Ironworks — (1829-1865) —

23 ► Alabama, Tuscaloosa County, Tuscaloosa — Burns’ Shoals —

24 ► Alabama, Tuscaloosa County, Tuscaloosa — Masons Marks —

25 ► Alabama, Tuscaloosa County, Tuscaloosa — The Black Warrior River —

26 ► Alaska, Fairbanks North Star Borough, Fairbanks — Alaska's Gold Rush Era —

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27 ► Alaska, Fairbanks North Star Borough, Fairbanks — Pipeline Facts —

28 ► Alaska, Fairbanks North Star Borough, Fairbanks — Pipeline History —

29 ► Alaska, Fairbanks North Star Borough, Fairbanks — Tanana Valley Gold —

30 ► Alaska, Juneau Borough, Juneau, Downtown Juneau — 3 — Alaska Juneau Mill —

31 ► Alaska, Juneau Borough, Juneau, Downtown Juneau — Hard Rock Miners —

32 ► Alaska, Kenai Peninsula Borough, Moose Pass — Gold Discoveries Trigger Stampede —

33 ► Alaska, North Slope Borough, Barrow — Paġlagivsi! — Welcome to the Ancient Village of Ukpiaġvik — “The Place Where We Hunt Snowy Owls” —

34 ► Arizona, Cochise County, Bisbee — The Importance Of Copper Mining —

35 ► Arizona, Cochise County, Bisbee — The Lavender Pit —

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36 ► Arizona, Cochise County, Cochise — Sulphur Springs —

37 ► Arizona, Cochise County, Tombstone — 37a — The Mines of Tombstone —

38 ► Arizona, La Paz County, Cibola — 104 — Cibola Arizona — Reported missing

39 ► Arizona, La Paz County, Quartzsite — Tyson's Well —

40 ► Arizona, La Paz County, Quartzsite — 060-019 — Tyson's Well — Old Stage Station —

41 ► Arizona, La Paz County, Salome — Harrisburg —

42 ► Arizona, Maricopa County, Apache Junction — Apache Lake —

43 ► Arizona, Maricopa County, Fort McDowell — Canyon Lake —

44 ► Arizona, Maricopa County, Gilbert — Pump House — Heritage District —

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45 ► Arizona, Maricopa County, Wickenburg, Whispering Ranch — Vulture Gold Mine —

46 ► Arizona, Mohave County, Chloride — Chloride — "Oldest Silver Mining Town in Arizona" —

47 ► Arizona, Mohave County, Kingman — Camp Beale Springs Arizona —

48 ► Arizona, Mohave County, Kingman — Cerbat —

49 ► Arizona, Mohave County, Kingman — 31805 — Chloride —

50 ► Arizona, Mohave County, Kingman — Mineral Park —

51 ► Arizona, Mohave County, Kingman — White Hills —

52 ► Arizona, Mohave County, Mohave Valley — Oatman —

53 ► Arizona, Mohave County, Oatman — Gold Road Mine —

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54 ► Arizona, Mohave County, Oatman — Oatman — Gold Mining Town —

55 ► Arizona, Mohave County, Oatman — 80 — Oatman Arizona and its Burros —

56 ► Arizona, Mohave County, Peach Springs — Guano Point —

57 ► Arizona, Navajo County, Holbrook — From Wood to Stone —

58 ► Arizona, Navajo County, Holbrook — Jasper Forest —

59 ► Arizona, Navajo County, Holbrook — Triassic Landscape —

60 ► Arizona, Pima County, Ajo — The Ajo Mining District —

61 ► Arizona, Pima County, Ajo — The City of Ajo —

62 ► Arizona, Pima County, Ajo — 10 — The Mine Manager's House — Ajo, Arizona —

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63 ► Arizona, Pima County, Lukeville — Kris Eggle —

64 ► Arizona, Pima County, Tucson, Agua Caliente Regional Park — Agua Caliente Ranch and Hot Springs —

65 ► Arizona, Pinal County, Apache Junction — Dons's Camp —

66 ► Arizona, Pinal County, Apache Junction — Goldfield Mining District — Arizona —

67 ► Arizona, Pinal County, Apache Junction — Goldfield Mining District —

68 ► Arizona, Pinal County, Kearny — Sonora, Arizona —

69 ► Arizona, Yavapai County, Bagdad — Bagdad Copper Mine —

70 ► Arizona, Yavapai County, Camp Verde — Pecan Lane Rural Historic Landscape —

71 ► Arizona, Yavapai County, Clarkdale — United Verde Copper Company Smelter —

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72 ► Arizona, Yavapai County, Congress — CY 6028 — The Song of the “Peavine” —

73 ► Arizona, Yavapai County, Jerome — Historic Audrey Shaft Headframe — Little Daisy Mine —

74 ► Arizona, Yavapai County, Jerome — Jerome Blast Furnace —

75 ► Arizona, Yavapai County, Jerome — Jerome, Arizona — Too Strong to Die —

76 ► Arizona, Yavapai County, Jerome — Rocket Shovel and Dragline —

77 ► Arizona, Yavapai County, Jerome — The Audrey Shaft and UVX Operations —

78 ► Arizona, Yavapai County, Jerome — The Childs-Irving Project - Construction Challenges —

79 ► Arizona, Yavapai County, Prescott — Granite Creek —

80 ► Arizona, Yuma County, Yuma — Castle Dome Mining District — 1864 - 1979 —

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81 ► Arkansas, Benton County, Bella Vista — Bella Vista Water Tank —

82 ► Arkansas, Clark County, Arkadelphia — Salt Kettle —

83 ► Arkansas, Franklin County, Ozark — Trail of Tears Memorial —

84 ► Arkansas, Garland County, Hot Springs — Hot Springs —

85 ► Arkansas, Johnson County, Clarksville — C-23 — Johnson County First Anthracite Coal —

86 ► Arkansas, Marion County, Rush — Rush Mining District — Buffalo National River — National Park Service, U.S. Department of the Interior —

87 ► Arkansas, Marion County, Rush — Rush, The Town That Zinc Built —

88 ► Arkansas, Newton County, Dogpatch, Township of Marble City — Arkansas Marble in Washington’s Monument —

89 ► Arkansas, Pike County, Murfreesboro — B-26 — Pike County Diamond Mines —

90 ► Arkansas, Randolph County, Pocahontas — A Shipping Route —

91 ► Arkansas, Sevier County, Belleville — 136 — Sevier County in the Civil War —

92 ► Arkansas, Union County, El Dorado — Oil in Arkansas — The Discovery —

93 ► Arkansas, Union County, El Dorado — Oil in Arkansas — The Smackover Field —

94 ► California, Alameda County, Fremont, Ardenwood — Leal Tank House —

95 ► California, Alameda County, Pleasanton — Alviso Adobe Community Park — 5,000 Years of History in Seven Acres —

96 ► California, Alameda County, Pleasanton — Gold Creek — The Great Gold Discovery of 1871 —

97 ► California, Alameda County, San Leandro — Filtration Basins — Lake Chabot Historical Walk —

98 ► California, Alpine County, Markleeville — Alpine County Historical Complex —

99 ► California, Alpine County, Markleeville — Grover Hot Springs —

100 ► California, Alpine County, Markleeville — Historic Silver Mountain City — (Kongsberg) —

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