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Two types of cell cores are helping precasters ease prison crowding quickly. Departments of correction often need to reduce overcrowding quickly in antiquated facilities. The precast industry is responding to the demand by contributing to a prison construction method that continues to gain in popularity. With a method first used in the 1970s, precasters are constructing entire cells and rooms before they are erected on site. Windows, doors, furniture, and fixtures are installed in the finished product, resulting in a product (minus only a floor) that is stacked by crane in multiple levels at the site. Use of this method has increased in recent years, particularly in the East, and favorable results are leading similar markets to consider specifying precast rooms in construction projects.