Two men workers in red and yellow work clothes cleaning the exterior windows of a skyscraper - industrial alpinism
Two men workers in red and yellow work clothes cleaning the exterior windows of a business skyscraper - industrial alpinism
Two men workers cleaning the exterior windows of a skyscraper - industrial alpinism
A man worker in yellow work clothes hanging on ropes and wipes the exterior windows of a business skyscraper - industrial alpinism - overcast weather
A man worker hanging on ropes by the exterior windows of a skyscraper and cleaning them - industrial alpinism
Two men workers cleaning the exterior windows of a skyscraper - industrial alpinism - hanging on ropes
A man worker hanging on ropes by the exterior windows of a business skyscraper and cleaning them - industrial alpinism
A man worker hanging on ropes by the exterior windows of a skyscraper - industrial alpinism
A man worker in yellow work clothes hanging on ropes and wipes the exterior windows of a business skyscraper out of the dirt - industrial alpinism - overcast weather
Three men workers hanging on ropes by the exterior windows of a skyscraper - industrial alpinism
A man worker in yellow work clothes hanging on ropes and wipes the exterior windows of a business skyscraper - holding by the device attached on the glass - industrial alpinism - overcast weather
A man worker hanging on ropes and wipes the exterior windows of a business skyscraper - industrial alpinism