Thereafter, Chewbacca carries the partially rebuilt C-3PO on his back during Han's encasement in carbonite. In a very real sense, encasement can be viewed as "stabilization + encapsulation". Some types of conduit are approved for direct encasement in concrete. The barrel encasement is pierced for heat dispersion and shows off a forward iron sight. Because graphite is soft, it requires some form of encasement. During the restoration, the foot encasement was reinstalled, covering the Karmawibhangga reliefs. But Rion's encasement attack is simply repelled, throwing them against the wall. Only one other bridge in Michigan was built with such concrete encasement. When the rocket is fired, the rocket propellant is expended entirely within the rocket encasement. Papadakis used a plaster encasement technique, but even so many tablets were lost. The latter separate the blocks' mass movements from the lean encasement concrete. Encasement is also less disruptive of ongoing services. Their extinction can require complete encasement, which can prove impossible for technical and financial reasons.