[UNEP Mercury Inventory toolkit Level 1 example letter for collecting information from the cement and/or paper industries: To be adjusted as relevant in the national context and copied to or printed on letter format of your government/agency department]

United Nations Environment Programme

The "Toolkit for identification and quantification of mercury releases", the "Toolkit", is intended to assist countries to develop a national mercury releases inventory. 

Manuals, Guides and Toolkits