black and white of alaska ghost town

49ers abandoned alaska american ancient and backdrop background barren belts blasting buildings cars chemical chemicals clean contamination conveyor days digging disintegration dredging dynamite economic economy elevation empty environmental exploratory exporation extraction from geologic geology ghost gold heavy history housing independence leachate leaching lower mercury metals milky mine mines mining mountain mountains multiple nature nugget nuggets panning physical pile piles poisonous quartz rail ramshackle ruins rush silver still superfund tailings talus town towns tunnel vein veins weathering white wooden