You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.

    If you are an ASTM Compass Subscriber and this document is part of your subscription, you can access it for free at ASTM Compass

    The Development of the Theoretical Basis of Coal Sampling

    Published: 01 January 1955

      Format Pages Price  
    PDF (728K) 30 $25   ADD TO CART
    Complete Source PDF (3.9M) 159 $55   ADD TO CART

    Cite this document

    X Add email address send
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word


    This paper is a review of the two main lines of investigation which preceded the over-all attack of the problem of coal sampling by L. A. Bushell in 1937. The paper shows that the “simple” experiment fails to disclose the true nature of the problem. Use of the techniques introduced by R. A. Fisher et al. permits the evaluation of the sampling constants of a coal, and thus the formulation of a satisfactory sampling procedure. Certain simplifications of these techniques will permit the accumulation of variance data without undue expense. The methods of Visman, Tanner and Lerner, and those currently in use in Britain are compared with the direct analysis of variance.

    Author Information:

    Bertholf, W. M.
    Coal Preparation Engineer, Colorado Fuel and Iron Corp., Pueblo, Colo.

    Committee/Subcommittee: D05.23

    DOI: 10.1520/STP46262S