A method includes receiving, at a component of a multimedia content distribution system, a command including blackout information related to a first version of content. In the subject methods, an isolated local environment that includes the region to be demineralized is produced. The cooling system includes a convective cooling system for forcing air into the iron sinter and an evaporative cooling system for directing fluid into the hot sinter. The sheet bodies have peripheral edge sections forming a curvilinear outline, and the fusion-bonding is made at this peripheral edge sections.