Chalk mining.
Palabras clave
chalk,
chalky,
white,
limestone,
lime,
mine,
pit,
open,
quarry,
sedimentary,
carbonate,
rock,
stone,
mineral,
calcite,
ground,
deposit,
calcium,
rocky,
stony,
cretaceous,
production,
industry,
industrial,
dig,
construction,
earth,
environment,
nature,
natural,
material,
geology,
geologic,
excavation,
excavate,
hill,
mountain,
ukraine,
landscape,
area,
background,
surface,
sky,
blue,
land,
texture,
site,
ecology
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