Richard Voss Grubenausbau Gmbh
Richardson Michael A.
Richardson Paul
Richter Archibald
Riekes Andreas
Rigot Guy J.g.
Rinklake Manfred
Rivera de Campos Edith
Rme Underground Pty Ltd
Rock Engineering (aust) Pty Ltd.
Rock Engineering Pty. Limited
Rodan Brian Bernard
Roechling Haren Kg
Roggen Rolf
Rogne Conrad O. (jr.)
Rohde Clarence J.
Roll Form Group A. Division Of Samuel Manu-Tech Inc.
Romtech Limited
Roodt Rey Johannes
Roosa Patrick