A cover for the protection of large bolts and nuts, such as those used to secure wind turbine towers to foundations, from the weather. The rods have markings on them to indicate the proper excavation depth for application s such as patiowalkway or d driveway. The storage system determines a difference between the requested VM disk image and a previous VM disk image representing a previous VM backup. The lining device can be contained in a multipart housing having flexible rod-like components that hold the device in the center of the longitudinal axis of the pipe.