As a result of the Environmental Protection Act or 1990 a large number of industrial processes capable of pollution of the environment have now come under the control of Her Majesties Inspectorate of Pollution (H.M.I.P.) or indirectly through local authorities who take advice from H.M.I.P.

The latest guide to I.P.C. was issued in 1993 and is obtainable from Her Majesties Stationary Office.
In particular the control of particle emissions to atmosphere requiring authorisation under I.P.C. is being introduced progressively between April 1991 and November 1995.
A further useful book dealing with pollution abatement technology for particulate and trace gas removal was published in 1994 as "Technical Guidance Note (Abatement) A3" also available from H.M.S.O.