Preservation of wooden poles carrying overhead telecommunication lines
CHAPTER I � GENERAL CONSIDERATIONS
    1.1 Purpose of this publication
    1.2 Basic concepts
CHAPTER II � ECONOMIC ADVANTAGES OF PRESERVATION
    2.1 Length of life of impregnated poles
    2.2 Practices and experience in various countries
    2.3 Additional remarks extending the data in point 2.2
CHAPTER III � PRESERVING SUBSTANCES
    3.1 Types of preservative and general remarks
    3.2 Oily preservatives
    3.3 Solvent-type preservatives
    3.4 Single water-borne substances
    3.5 Combinations of water-borne substances
CHAPTER IV � PRESERVATION PROCESSES
    4.1 General
    4.2 Summary of preservation processes
    4.3 Methods of treatment
    4.4 Diffusion processes
ANNEX 1 � Chief water-borne copper-mixture preservatives used to impregnate poles
ANNEX 2 � Organizations carrying out research and tests on pole preservation
ANNEX 3 � Bibliography