ISBN-13: 9781493570782 / Angielski / Miękka / 2010 / 44 str.
ISBN-13: 9781493570782 / Angielski / Miękka / 2010 / 44 str.
This report describes a study of operator movement relative to the motion of a roof bolting machine boom arm. This work was aimed at reducing the risk of injury to underground coal mine workers from moving machinery.