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Hard coal and coke -- Mechanical sampling -- Part 3: Coal -- Sampling from stationary lots by ISO is a reference work available to read on EtoBox.

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Foreword 0 1 Scope 0 2 Normative references 0 3 Terms and definitions 0 4 Establishing a sampling scheme 0 4.1 General 0 4.2 Design of the sampling scheme 0 4.2.1 Material to be sampled 0 4.2.2 Division of lots 0 4.2.3 Precision of sampling 0 4.2.4 Bias of sampling 0 4.3 Precision of results 0 4.3.1 Precision and total variance 0 4.3.2 Primary increment variance 0 4.3.3 Preparation and testing variance 0 4.3.4 Number of sub-lots and number of increments per sub-lot 0 4.4 Minimum mass of sample 0 4.5 Mass of primary increment 0 4.6 Size analysis 0 5 Methods of sampling from wagons, barges and ships 0 5.1 General 0 5.2 Number of increments and sub-lots 0 5.2.1 General analysis and moisture samples 0 5.2.2 Common sample 0 5.3 Taking the increments 0 5.4 Distribution of increments 0 5.4.1 Wagons 0 5.4.2 Barges 0 5.4.3 Ships 0 5.4.4 Random selection of increments 0 6 Methods of sampling from stockpiles 0 7 Sampling equipment — mechanical auger 0 8 Handling and storage of samples 0 9 Sample preparation 0 10 Minimization of bias 0 10.1 Causes of bias 0 10.2 Checking for precision and bias 0 11 Verification 0 Bibliography 0

Who reads Hard coal and coke -- Mechanical sampling -- Part 3: Coal -- Sampling from stationary lots?

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ISO

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EN

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reference