What technique should be employed to ensure safe retraction of the auger?

Using low speed during the retraction of the auger is the safest technique because it allows for better control of the equipment and reduces the risk of accidents. A slower retraction speed minimizes the chance of sudden movements that could lead to entrapment or injury, especially in environments where workers may be in close proximity to the auger. This controlled speed also helps prevent damage to the equipment and the surrounding area, ensuring that any debris or material being extracted is safely managed without risking harm to personnel.

In contrast, retracting the auger at high speed could lead to dangerous situations due to rapid and unpredictable movements. Lifting the auger at an angle may not provide the necessary stability and control needed for safe operation, leading to potential tipping or falling. While having another worker assist can enhance safety through teamwork, it does not address the fundamental importance of controlling the retraction speed, which is the critical factor for preventing accidents during this process.