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Conveyor belt, an excavator and a pile of gravel. Open-pit mining. No people.
Coal loading excavator, heaps of coal
Conveyor belts in an aggregate quarry.
Daytime close-up of heaps of sand and conveyer belts in a quarry, reflecting in a puddle of water, taken just before sunset
Construction site concept: A large pile of crushed stone and earth for commercial use and blue sky
Concrete plant
Extraction of granite. Open cast mine. Stone Quarrying.
Piles of gypsum being processed at a plant. Raw material used for fabricating wallboard in the construction industry.
Aggregate Production Quarry in Cyprus Republic
Stock photo showing close-up view of heap of gravel on construction site being transported by the toothed bucket of a wheeled excavator into the back of a flat bed lorry.
a pile of gravel
Lightning arrester system on flat roof. Details of industrial building.
Open-pit mine engineer wearing protective clothes and white helmet squatting next to pile of gravel, taking notes on clipboard. Quality control concept.
Dachau, Germany - July 4, 2011 : Dachau Concentration Camp Memorial Site.
Panorama of Open-pit Mine with Earth Mover and conveyor belts
Aerial view of a mining quarry with heavy machinery, surrounded by forest.
Heavy equipment machine wheel loader on construction jobsite
a pile of light stones in a desert landscape at a limestone mining site, a hill of white cobblestones next to a quarry, building material in the process of being extracted from the ground
on the roof structure of the roadway, a bridge made of concrete where curbs with pebble barriers are formed by screwed black rubber bumpers with white reflectors, traffic, traffic, truck, mulch, mulching, wall
Mineral and pebble stones for construction
Dumping a load of rocks from the truck.
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A large Bucket Wheel Excavator being repaired in a lignite pit mine
Trucks unloading gravel in construction site
A large stone crusher plant with silos and construction machinery used for highway renovation, aerial view.
one large pile of gray rubble in green grass on the street against the black wall of the fence
Quarry for the extraction of granite. Granite quarry.
Excavator loading sand into truck in a sand quarry
sand mining for construction use
Bulk material consisting of rock with different grain sizes lies on piles in a storage area for construction work.
Free Images: "bestof:...Raw aggregate storage piles at Six Companies' gravel screening and washing plant." - NARA - 293628.jpg Scope and content Photograph from Volume Two of a series"
gravel-texture-rocks-gray-grey-1643167.jpg
beach-stone-gravel-k%C3%B6vesed%C3%A9s-1710385.jpg
everyday-life-washing-dishes-cup-194218.jpg
quarry-limestone-stones-61762.jpg
nature-technology-industrial-plant-61761.jpg
Papago_dry_washer.tiff
Project_365_#243:_310813_Season's_End.jpg
B-29's_being_subbed_out_to_Car_Companies?.png
NACA_Aircraft_in_Hangar_-_Clockwise_from_front_center:_YF-84A,_D-558-1,_D-558-2,_B-47,_X-1_ship.jpg
Design_Analysis_of_the_Lockheed_PV-1_Ventura.png
portugues-sexo_alemão-sex_ingles-sex_africano-seks_russo-секс_albanes-sex_chines-性別_bulgaro-секс_croata-spol_gales-rhyw_coreano-섹스_frances-sexe_japones-セックス_filandes-sukupuolesta_arabe-الجنس_prontos_ai_tens_em_15_linguas_a_p.jpg
portugues-sexo_alemão-sex_ingles-sex_africano-seks_russo-секс_albanes-sex_chines-性別_bulgaro-секс_croata-spol_gales-rhyw_coreano-섹스_frances-sexe_japones-セックス_filandes-sukupuolesta_arabe-الجنس_prontos_ai_tens_em_15_linguas_a_p.jpg
portugues-sexo_alemão-sex_ingles-sex_africano-seks_russo-секс_albanes-sex_chines-性別_bulgaro-секс_croata-spol_gales-rhyw_coreano-섹스_frances-sexe_japones-セックス_filandes-sukupuolesta_arabe-الجنس_prontos_ai_tens_em_15_linguas_a_p.jpg
"Raw_aggregate_storage_piles_at_Six_Companies'_gravel_screening_and_washing_plant."_-_NARA_-_293628.tif
"Raw_aggregate_storage_piles_at_Six_Companies'_gravel_screening_and_washing_plant."_-_NARA_-_293628.jpg
"Six_Companies,_Inc.,_gravel_screening_and_washing_plant._View_from_hill_southeast_of_plant."_-_NARA_-_293915.tif
"Six_Companies,_Inc.,_gravel_screening_and_washing_plant._View_from_hill_southeast_of_plant."_-_NARA_-_293915.jpg
"Rock_crusher_at_Six_Companies'_gravel_screening_and_washing_plant."_-_NARA_-_293627.tif
"General_view_of_Six_Companies'_gravel_screening_and_washing_plant_at_Three-way_R.R._junction._View_from_hill_to..._-_NARA_-_293656.tif
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General_view_of_contractor's_sand_and_gravel_plant..._-_NARA_-_294028.jpg
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"Group_including_members_of_the_Concrete_Consulting_Board_at_the_Six_Companies'_screening_and_washing_plant._From..._-_NARA_-_293630.jpg
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"Six_Companies_Inc._high_level_concrete_mixing_plant_showing_loading,_mixing,_and_control_decks_with_cement_storage..._-_NARA_-_293815.tif
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"Looking_down_into_aggregate_conveyor_at_Six_Companies'_low_level_concrete_mixing_plant."_-_NARA_-_293644.tif
Detail_of_sand_grading_machinery,_gravel_washing_and_screening_plant_-_NARA_-_294105.tif
"Looking_down_into_aggregate_conveyor_at_Six_Companies'_low_level_concrete_mixing_plant."_-_NARA_-_293644.jpg
Detail_of_sand_grading_machinery,_gravel_washing_and_screening_plant_-_NARA_-_294105.jpg
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Contractor's_sand_and_gravel_plant._The_screening_and_washing_house_to_the_right_the_four_plant_conveyors_and_to_the..._-_NARA_-_294032.jpg
Looking_into_location_of_Six_Companies,_Inc.,_high_level_mixing_plant._Aggregate_bins_in_background._Forms_for_mixer..._-_NARA_-_293791.tiff
Detail_of_installation_of_sand_and_gravel_grading_machinery,_gravel_screening_and_washing_plant_-_NARA_-_294124.tif
Detail_of_installation_of_sand_and_gravel_grading_machinery,_gravel_screening_and_washing_plant_-_NARA_-_294124.jpg
Looking_into_location_of_Six_Companies,_Inc.,_high_level_mixing_plant._Aggregate_bins_in_background._Forms_for_mixer..._-_NARA_-_293791.jpg
Sand_and_coarse_aggregate_batchers_on_upper_batching_deck_at_Six_Companies'_low_level_concrete_mixing_plant._-_NARA_-_293629.tif
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Hoisting_drums_for_permanent_150-ton_cableway_in_storage_at_Boulder_City_yards_-_NARA_-_293820.jpg
Cables_and_sockets_for_permanent_150-ton_cableway_in_storage_at_Boulder_City_yards._These_are_3-1-2"_fabrications..._-_NARA_-_293821.jpg
"Unloading_carriage_for_150-ton_permanent_cableway_at_Boulder_City_storage_yards._This_unit_weighs_19_tons."_-_NARA_-_293819.jpg
Concrete_Mixing_Operation.jpg
Gravel_screening_and_crushing_plant_at_Station_A95-00_-_NARA_-_298233.tif
Gravel_screening_and_crushing_plant_at_Station_A95-00_-_NARA_-_298233.jpg
"Six_Companies'_high_level_concrete_mixing_plant_and_cement_blending_plant."_-_NARA_-_293893.tif
"Six_Companies'_high_level_concrete_mixing_plant_and_cement_blending_plant."_-_NARA_-_293893.jpg
Photograph_with_caption_"Lake_City_breakwater,_aggregate_stock_piles"_-_NARA_-_282450.tif
Photograph_with_caption_"Lake_City_breakwater,_aggregate_stock_piles"_-_NARA_-_282450.jpg
View_showing_arrangement_for_handling_raw_aggregate_between_pit_and_screening_plant._Hopper_and_shuttle_conveyor_at..._-_NARA_-_294125.tif
View_showing_arrangement_for_handling_raw_aggregate_between_pit_and_screening_plant._Hopper_and_shuttle_conveyor_at..._-_NARA_-_294125.jpg
"Roller_bearings_for_belt_conveyor_leaving_gravel_screening_plant."_-_NARA_-_294131.tif
"Roller_bearings_for_belt_conveyor_leaving_gravel_screening_plant."_-_NARA_-_294131.jpg
Concrete aggregate grinding.JPG
"Cottages_erected_by_Six_Companies,_Inc.,_in_recently_developed_section_in_southeast_limits_of_Boulder_City_Nevada...._-_NARA_-_293623.tif
"Unloading_cement_at_Six_Companies_low_level_concrete_mixing_plant."_-_NARA_-_293636.tif
"The_sand_and_gravel_conveyor_from_mixer_storage_to_the_west_side_mixer._On_the_left_of_the_mixing_plant_is_excavated..._-_NARA_-_294067.tif
"Unloading_cement_at_Six_Companies_low_level_concrete_mixing_plant."_-_NARA_-_293636.jpg
"Cottages_erected_by_Six_Companies,_Inc.,_in_recently_developed_section_in_southeast_limits_of_Boulder_City_Nevada...._-_NARA_-_293623.jpg
"The_sand_and_gravel_conveyor_from_mixer_storage_to_the_west_side_mixer._On_the_left_of_the_mixing_plant_is_excavated..._-_NARA_-_294067.jpg
Plate_VI._A._Washing_monazite_gravel,_Cleveland_County..jpg
Airplane_tripper_stacker_at_mixer_storage_pile,_sand_and_gravel_system_-_NARA_-_293968.tif
Airplane_tripper_stacker_at_mixer_storage_pile,_sand_and_gravel_system_-_NARA_-_293968.jpg
"Looking_Southwest_across_park_towards_Six_Companies'_area,_Boulder_City,_Nevada._View_shows_beginning_of_landscape..._-_NARA_-_293624.tif
"Automatic_graphic_recording_devices_at_Six_Companies'_low_level_concrete_rising_plant."_-_NARA_-_293625.tif
"Automatic_scale_dials_and_cement_batchers_at_Six_Companies'_low_level_concrete_mixing_plant."_-_NARA_-_293626.tif
"Truck_mounted_drill_rig_used_by_Six_Companies_in_upper_portion_of_diversion_tunnels._Rig_is_seen_in_the_position_in..._-_NARA_-_293641.tif
Dead_weight_test_on_one_of_Six_Companies'_20-ton_cableways._Span_is_designed_to_a_20-ton_capacity_and_is_being..._-_NARA_-_293807.tif
Boulder_Dam,_tail_tower_installation_for_Six_Companies'_cableway_installations_Nos._5_and_6_-_NARA_-_293892.tif
Double-decked_coach_used_in_transporting_Six_Companies,_Inc.,_workmen_from_Boulder_City_to_dam,_Capacity_150_men_-_NARA_-_293924.tif
"Truck_mounted_drill_rig_used_by_Six_Companies_in_upper_portion_of_diversion_tunnels._Rig_is_seen_in_the_position_in..._-_NARA_-_293641.jpg
Boulder_Dam,_tail_tower_installation_for_Six_Companies'_cableway_installations_Nos._5_and_6_-_NARA_-_293892.jpg
"Looking_Southwest_across_park_towards_Six_Companies'_area,_Boulder_City,_Nevada._View_shows_beginning_of_landscape..._-_NARA_-_293624.jpg
"Automatic_graphic_recording_devices_at_Six_Companies'_low_level_concrete_rising_plant."_-_NARA_-_293625.jpg
"Automatic_scale_dials_and_cement_batchers_at_Six_Companies'_low_level_concrete_mixing_plant."_-_NARA_-_293626.jpg
Dead_weight_test_on_one_of_Six_Companies'_20-ton_cableways._Span_is_designed_to_a_20-ton_capacity_and_is_being..._-_NARA_-_293807.jpg
Double-decked_coach_used_in_transporting_Six_Companies,_Inc.,_workmen_from_Boulder_City_to_dam,_Capacity_150_men_-_NARA_-_293924.jpg
Gravel and aggregates, Alexandra Dock, Kingston upon Hull.JPG
Warrior1400XWorking.JPG
"Loading_concrete_into_2-yd._bottom_dump_buckets_at_Six_Companies'_low_level_concrete_mixing_plant._Buckets_are..._-_NARA_-_293633.tif
"Looking_downstream_into_lower_Black_Canyon_from_point_on_Six_Companies'_construction_road_on_Nevada_side._Arizona..._-_NARA_-_293635.tif
"Truck_carrying_two_4-yard_agitators_being_loaded_at_Six_Companies,_Inc.,_high_level_concrete_mixing_plant._Concrete..._-_NARA_-_293817.tif
Workmen_going_on_shift_in_skip_operated_over_Six_Companies_Inc.,_Cableway_No._9_-_NARA_-_293826.tif
"Typical_interior_view_of_head_tower_of_one_of_Six_Companies_Inc.,_cableway_installations._View_from_switch_deck..._-_NARA_-_293827.tif
"Loading_concrete_into_2-yd._bottom_dump_buckets_at_Six_Companies'_low_level_concrete_mixing_plant._Buckets_are..._-_NARA_-_293633.jpg
"Looking_downstream_into_lower_Black_Canyon_from_point_on_Six_Companies'_construction_road_on_Nevada_side._Arizona..._-_NARA_-_293635.jpg
Workmen_going_on_shift_in_skip_operated_over_Six_Companies_Inc.,_Cableway_No._9_-_NARA_-_293826.jpg
"Truck_carrying_two_4-yard_agitators_being_loaded_at_Six_Companies,_Inc.,_high_level_concrete_mixing_plant._Concrete..._-_NARA_-_293817.jpg
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Wildish_GoodNeighbor_HistoricPhoto.jpg
Huge berms on Unwin Avenue, just south of the shipping channeld -a.jpg
Esquilinchuche washing machine.JPG
US_Navy_100506-N-5862D-008_Nathan_Peoples_piles_waterlogged_paperwork_and_equipment_that_was_damaged_by_floodwaters_at_the_Navy_Recruiting_Command_storage_annex.jpg
"Looking_upstream_into_Black_Canyon_toward_Hoover_Damsite_from_point_on_Six_Companies_Construction_road_on_Nevada_side."_-_NARA_-_293720.tif
Hoist,_conveyor_and_dump_drums_in_head_tower_No._5_of_Six_Companies_Inc.,_cableway._A_typical_arrangement._View_from..._-_NARA_-_293828.tiff
"Looking_upstream_into_Black_Canyon_toward_Hoover_Damsite_from_point_on_Six_Companies_Construction_road_on_Nevada_side."_-_NARA_-_293720.jpg
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