Key legal question
Whether the site manager had authority to bind the contractor when ordering the crane.
Extracted holding
The site manager acted as the contractor's representative and the respondent could in good faith rely on apparent authority created by the contractor's conduct.
Extracted reasoning
He coordinated the works, gave instructions on site, had long-standing dealings with the respondent, and the contractor passively allowed him to act in that role. No objective signs of abuse required further inquiry.