Photographs depict:

/1 Grinnell type 'E' sprinklers protecting an office block;

/2 Grinnell type 'C' automatic sprinklers installed in a woodworking shop;

/3 Mulsifyre protection of oil-filled transformers; /4 Protectospray equipment installed on Shell's spherical and cylindrical storage vessels containing liquefied petroleum gas.

The information sheets give details of the three systems, and list the types of plants etc which would benefit from their installation.