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The factors leading to the development of automatic shot‐blasting and pre‐construction priming of heavy steel plate are described in this paper. Pre‐construction primers are used to protect steel against corrosion during fabrication and to form the first coat of the final protective system. The ideal properties of a pre‐construction primer are reviewed and a general survey is made of the different types of pre‐construction primer. These are: barrier coatings, inhibitive primers and zinc primers.

BTR move. The reinforced plastics activities of BTR Industries Ltd. are now centred on the company's Bridge Road., Camberley, works. The full address to which all future communications should be sent is: BTR Industries Ltd., Reinforced Plastics, Bridge Road, Camberley, Surrey (Tel.: Camberley 5323). complex process in which electrophoresis, electro‐osmosis and ionic transport all play a part.

In this, the second in a series of articles on the important topic of management attitudes to corrosion and anti‐corrosion, the author analyses the complexities involved in identifying, choosing and educating a corrosion engineer. Referring to the illustration to this article which represents a simplification of the human categories involved, one might say that the successful formula for most medium‐sized firms is C + E = B where C is a chosen apprentice or student, E is education and B is the result, an improved type of maintenance manager having the capacity ot identify a wide variety of corrosion problems and equipped to present these, if necessary, to the specialist for particular solutions. The corrosion consultancy D is recommended particularly for small firms.