Explanation:

The workmen lifted the body for the scan on a hydraulic trailer. This means that they used a special type of trailer that has a hydraulic system to lift heavy objects. The process of lifting the body for the scan involved the following steps:

1. Preparing the Hydraulic Trailer: The workmen first prepared the hydraulic trailer by ensuring that it was in good working condition. They checked the hydraulic system to ensure that it was functioning properly and that there were no leaks or other issues.

2. Positioning the Body: Once the trailer was ready, the workmen carefully positioned the body on the trailer. They made sure that it was securely fastened and that it would not move during the scanning process.

3. Activating the Hydraulic System: The workmen then activated the hydraulic system on the trailer. This caused the trailer to lift the body off the ground and into the air. The hydraulic system allowed for precise control over the lifting process, ensuring that the body was lifted smoothly and without any sudden movements.

4. Transporting the Body: With the body safely secured on the hydraulic trailer, the workmen then transported it to the scanning facility. They drove the trailer slowly and carefully to avoid any jarring or sudden movements that could damage the body or the trailer.

Overall, the use of a hydraulic trailer allowed the workmen to lift the body for the scan safely and efficiently. The hydraulic system provided precise control over the lifting process, ensuring that the body was lifted smoothly and without any sudden movements. This helped to minimize the risk of damage to the body and made the scanning process safer and more reliable.