If you use assistive technology (such as a screen reader) and need a
version of this document in a more accessible format, please email email@example.com.
Please tell us what format you need. It will help us if you say what assistive technology you use.
The report studies the world-wide best available practice for controlling releases to the environment during the production of sulphuric acid, nitric acid, halogens, halides, oxyhalogens, and titanium dioxide.