A worker inspecting a sample of asphalt checking for proper chemical composition and quality control.
Palabras clave
men at work,
inspecting,
sample,
asphalt,
checking,
proper,
chemical,
composition,
quality,
control,
natural,
resource,
pollution,
industrial,
factory,
consumption,
energy,
environment,
industry,
technology,
electric,
plant,
electricity,
ecology,
gasoline,
fossil
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