|   | TELEPHONE REPEATER STATION * | A building, similar in style to a telephone exchange but smaller. They were used to compensate for the inadequacies of 1920's and 30's equipment over long distances, by repeating the signal every 200 miles. |  | back | 
		|   | SITE * | Unclassifiable site with minimal information. Specify site type wherever possible. |  | back | 
		|   | BUILDING * | A structure with a roof to provide shelter from the weather for occupants or contents. Use specific type where known. |  | back | 
		|   | STONE * | Use only where stone is natural or where there is no indication of function. |  | back | 
		|   | MILL * | A factory used for processing raw materials. Use more specific mill type where known. See also TEXTILE MILL, for more narrow terms. |  | back | 
		|   | COMMUNICATIONS * | This is the top term for the class. See COMMUNICATIONS Class List for narrow terms. |  | back | 
		|   | INDUSTRIAL * | This is the top term for the class. See INDUSTRIAL Class List for narrow terms. |  | back | 
              
              
                
                    * Copyright of English Heritage (1999)
                    