NATIONAL FOREWORD

This Indian Standard (Part 1) (First Revision) which is identical with ISO 13909-1 : 2016 ‘Hard coal and coke - Mechanical sampling - Part 1: General introduction’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on recommendation of the Solid Mineral Fuels and Solid Biofuels Sectional Committee and approval of the Petroleum, Coal and Related Products Division Council.

The standard (Part 1) was first published in 2014 which superseded IS 436 (Part 1/Sec 2) : 1976 Methods for sampling of coal and coke: Part 1 Sampling of coal, Section 2 Mechanical sampling’ and IS 436 (Part 2) : 1965 ‘Methods of sampling of coal and coke: Part II Sampling of coke ( revised )’.