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The largest natural deposit of asphalt (bitumen) in the world, Trinidad and Tobago, Caribbean
Bubbles of Wastewater in Treatment tanks, industries, and environment.Wastewater treatment plant. Modern urban wastewater treatment plant.
The gravel pit
Cement factory with ship loading at seaport, Venezuela
leixões ship cargo container pier
Turf bricks arranged to dry in Ireland
Large excavator on tracks in a sand quarry.
Industry, mining, economy, economy, mineral resources, Soligorsk, Salihorskm, Солигорск
Groundwater eruption at the beginning of oil well drilling
Artificial pond for demonstrating how the salt is extracted from the salty water,  by  ancient way. Pomorie town, Bulgaria, Eastern Europe.
Excavator working digs the ground in the lake. stock photo
Digger on the bank of the river digs the mud ground of the beach, cloudy sky
old colliery dam with drain pipe
High angle view soapsud on the concrete floor
Corroded steel tank bottom. Empty sedimentation tank in the city wastewater treatment plant.
river cleaner, aquatic weed harvesters , environmental conservation, River remediation
puddle on road
Hoanib River Flowing
Sediment transposition intervention to the Atlantic Ocean to optimize the hydrodynamic balance in Ovar, Portugal.
natural resources mine
pond construction for landscaping water
Crude oil seen separated from sand for collection. Tailings ponds are used to separate the heavy oil bitumen from the sticky sand mined from around the area.  Near Fort McMurray, Alberta.
Polluted water in the canal, environmental pollution concepts.
itabuna, bahia, brazil - february 15, 2012: accumulation of rainwater is seen in a excavated site for the construction of a building in the city of Itabuna, in southern Bahia.
Crystal pool scenery in a salt field, North China
mixing cement
A big, concrete storage for manure of livestock.
Dirty waters in a sewage treatment plant
An unmanned and water logged British World War One trench.
Construction Site Foundation Tubular Reinforcement
Free Images: "bestof:WATER-FILLED PIT IS THE RESULT AFTER A DRAGLINE DREDGED MATERIALS TO BE USED IN MAKING BLACKTOPPING, IN THE... - NARA - 554546.tif Scope and content General"
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