PRACTICAL EXPERIENCE AT RIDDINGS DRIFT. II. HIGH-SPEED OPERATION AND ROADWAY DRIVAGE FOR SHORT-FACE INSEAM RETREAT MINING = EXPERIENCE PRATIQUE A RIDDINGS DRIFT. 2EME PARTIE: DEPILAGE ET TRACAGE ACCELERES DANS UNE EXPLOITATION RABATTANTE PAR TAILLE COURTE SANS TRAVAUX AU ROCHERROUND C; BEEFORTH RP.1972; MINE AND QUARRY; G.B.; DA. 1972; VOL. 1; NO 7; PP. 21-30 (4 P.)Serial Issue

RIDDINGS DRIFT = LA MINE DE RIDDINGS DRIFTROUND C; BEEFORTH RP.1973; MINE AND QUARRY; G.B.; DA. 1973; VOL. 2; NO 2; PP. 31-34 (3 P.)Serial Issue

PRACTICAL EXPERIENCE AT RIDDINGS DRIFT. HIGH-SPEED OPERATION AND ROADWAY DRIVAGE FOR SHORT-FACE IN-SEAM RETREAT MINING = EXPERIENCE PRATIQUE A RIDDINGS DRIFT. TRAVAUX A CADENCE ACCELEREE ET CREUSEMENT DES VOIES POUR UNE EXPLOITATION RABATTANTE EN VEINE A TAILLE COURTEROUND C; BEEFORTH RP.1972; MINE AND QUARRY; G.B.; DA. 1972; VOL. 1; NO 8; PP. 37-41 (3 P.)Serial Issue