Closeup olej továrna zaměstnanec v ochranném oblečení bije dlouhé trubky s kladivem uvolnit průzkumné jámy - Stock záběry a video

Wide shot of construction workers in dimly lit hallways of unfinished building

An electrician or builder and engineer, in a blue robe, in a yellow and white helmet, check the technical overview for strength, prepare electric poles, an electric tower, energy, and workers.

Asian engineer maintenance checking technical data of heating system equipment

African people build a clinic to combat the ebola virus outbreak in Liberia, West Africa.

KAZAN, TATARSTAN/RUSSIA - APRIL 17 2018: Closeup worker in protective outfit rakes exploratory pit with tool near mechanism in petrochemical plant workshop on April 17 in Kazan

An electrician or builder and engineer, in a blue robe, in a yellow and white helmet, check the technical overview for strength, prepare electric poles, an electric tower, energy, and workers.

KAZAN, TATARSTAN/RUSSIA - APRIL 17 2018: Closeup worker in protective outfit rakes exploratory pit with tool near mechanism in petrochemical plant workshop on April 17 in Kazan

KAZAN, TATARSTAN/RUSSIA - JANUARY 09 2018: Skilled employee in blue cap and glasses walks along pipeline system and huge gas tanks to metal stairs on January 09 in Kazan

KAZAN, TATARSTAN/RUSSIA - AUGUST 22 2017: Male person in uniform and helmet controls huge machine tool operating at refinery plant area on August 22 in Kazan

KAZAN/TATARSTAN/RUSSIA - NOVEMBER 15 2016: Backside view motion to worker in uniform jacket turning level at oil extracting well against bright sunset on November 15 in Kazan

KAZAN, TATARSTAN RUSSIA - MAY 21 2018: Skilled worker in rubber gloves tests electrical distribution equipment with special tool against inspector on May 21 in Kazan

Closeup person holds switchgear and man in protective outfit fixes equipment to concrete support doing welding