The production manager might perform personal inspections or oversee a group of quality-control workers. Routine preventive maintenance on manufacturing equipment can be important to avert potential standstills in production.
Toenails typically fall off due to either fungal infection or injury that results in a separation of the nail from the area of the toe called the nail bed, according to Foot Vitals. While pain is common with this type of injury, it is not guaranteed.
Black toenails are caused by trauma to the nail. Common causes of toenails turning black include ill-fitting shoes, fungus, dropping an object on the toe and cutting the nail too short. Impact to the toenail causes bleeding underneath the nail's surface. Part or all of the toenail may turn black.