Communication Systems

Colliery Tannoy. An armoured colliery tannoy. D.A.C. Battery Mini-Amp, type 048 02 0076 – 301, B.M.A. GAI Tronics Ltd, Burton-On-Trent, Staffs. Made from iron, rubber and plastic. Size 8 3/4″ x 10 1/2″ x 4 3/4″ inches. Date 1990’s? These tannoys were known as dacs and were placed at all major transfer points, headings and coal faces etc and used …

Colliery Tannoy. An armoured colliery tannoy. D.A.C. Battery Mini-Amp, type 048 02 0076 – 301, B.M.A. GAI Tronics Ltd, Burton-On-Trent, Staffs. Made from iron, rubber and plastic. Size 6 3/4″ x 10 1/2″ x 6″ inches. Date 1990’s? These tannoys were known as dacs and were placed at all major transfer points, headings and coal faces etc and used for …

Colliery Surface Table Telephone. A miners table telephone with a crank handle, used for surface to underground or surface to surface communication. The front label states how to use the phone as follows – To call turn handle and lift handset… When finished replace handset and turn handle. The back of the telephone has a makers plate (as seen above) …

Portable Mining Magneto Telephone. A portable mining magneto telephone. Made by Ericsson. Type N-1834. Made from mahogany wood and iron. Size 12″ x 7″ x 5″ inches. Dated 1940. This telephone unit has an Ever Ready 3 volt battery incorporated into the back of the unit and a detachable winding key that can be inserted into the body through a …

Portable Mining Magneto Telephone. A later portable mining magneto telephone. Made by Ericsson. Type N-1846. Made from tin and bakelite. Size 10″ x 6″ x 5″ inches. Dated 1948. This telephone unit has its winding key integrated into the body. 

Colliery Tannoy – D.A.C.  A D.A.C. armoured colliery tannoy. Manufactured by Stedfast Electrical Controls Ltd. Hucknall, Nottingham, England. Model SA-1. Made from iron, steel, rubber and brass. Size 10″ X 7″ X 6″ inches. Date 1970’s-1980’s. These tannoys were known as dacs and were located at all major transfer points, headings and coal faces etc and used for communication between …

Colliery Tannoy. An armoured colliery tannoy. D.A.C. Mini-Amp type B.M.A. Derby Automation Consultants Ltd, Burton-On-Trent, Staffs. Made from iron, rubber and brass. Size 11″ x 7″ x 6″ inches. Date 1970’s-1980’s. These tannoys were known as dacs and were placed at all major transfer points, headings and coal faces etc and used for communication between such places and the surface …

Colliery Tannoy. An armoured colliery tannoy. D.A.C. Mini-Amp type MA/MI. Derby Automation Consultants Ltd, Burton-On-Trent, Staffs. Made from iron, rubber and brass. Size 9 1/2″ x 4″ x 6″ inches. Date 1980’s-1990’s. These tannoys were known as dacs and were placed at all major transfer points, headings and coal faces etc and used for communication between such places and the …

Mining Industry Telephone. A mining industry telephone, a common type used underground at all collieries. Made by the A. T. & E. Co Ltd of Liverpool. Size 10″ x 16″ x 6″ inches.