A boring system (100, 152) comprising a shaft enlargement arrangement (10, 150), the shaft enlargement arrangement (10, 150) comprising: a hollow column (12, 154) proximate a lower end of the boring system (100, 152), the hollow column (12, 154) being arranged to accommodate a kibble travelling up and down the hollow column (12, 154); a reamer section (14, 156) comprising a downwardly tapering first cutter head arrangement (14, 158) that is rotatably fitted to the hollow column (12, 154), with first drive means being provided to rotate the first cutter head arrangement (14, 158) relative to the hollow column (12, 154) so as to bore downwardly a hole having a diameter corresponding substantially to the diameter of the first cutter head arrangement (14, 158); a boring head arrangement (38, 160) fitted to an operatively lower end of the hollow column (12, 154), the boring head arrangement (38, 160) terminating in a downwardly tapering second cutter head arrangement (39, 162) to bore a leading or pilot hole, having a diameter that is less than the diameter of the first cutter head arrangement (14, 158), as the shaft enlargement arrangement (10, 150) proceeds to bore downwardly; a thrust section (44, 164) to allow the boring head arrangement (38, 160) to advance relative to the reamer section (14, 156); and a gripper arrangement (34, 158) to secure the shaft enlargement arrangement (10, 150) within the bored hole and to control the advancing of the boring head arrangement (38, 160) relative to the reamer section (14, 156), characterized in that the boring system (100, 152) includes: a plurality of support decks locatable above the shaft enlargement arrangement (10, 150), within the hole bored by the first cutter head arrangement (14, 158); and an aboveground support rig arrangement and headgear arrangement comprising: a winch to move the shaft enlargement arrangement (10, 150) up and down as and when required within the bored hole via cables extending between the winch and the shaft enlargement arrangement (10, 150); a kibble winder to move the kibble up and down through the hollow column (12, 154), also via cables extending between the kibble winder and the kibble; and a deck winder to move the plurality of support decks up and down, so as to separate the support decks from the shaft enlargement arrangement (10, 150) as and when required. a hollow column (12, 154) proximate a lower end of the boring system (100, 152), the hollow column (12, 154) being arranged to accommodate a kibble travelling up and down the hollow column (12, 154); a reamer section (14, 156) comprising a downwardly tapering first cutter head arrangement (14, 158) that is rotatably fitted to the hollow column (12, 154), with first drive means being provided to rotate the first cutter head arrangement (14, 158) relative to the hollow column (12, 154) so as to bore downwardly a hole having a diameter corresponding substantially to the diameter of the first cutter head arrangement (14, 158); a boring head arrangement (38, 160) fitted to an operatively lower end of the hollow column (12, 154), the boring head arrangement (38, 160) terminating in a downwardly tapering second cutter head arrangement (39, 162) to bore a leading or pilot hole, having a diameter that is less than the diameter of the first cutter head arrangement (14, 158), as the shaft enlargement arrangement (10, 150) proceeds to bore downwardly; a thrust section (44, 164) to allow the boring head arrangement (38, 160) to advance relative to the reamer section (14, 156); and a gripper arrangement (34, 158) to secure the shaft enlargement arrangement (10, 150) within the bored hole and to control the advancing of the boring head arrangement (38, 160) relative to the reamer section (14, 156), a plurality of support decks locatable above the shaft enlargement arrangement (10, 150), within the hole bored by the first cutter head arrangement (14, 158); and an aboveground support rig arrangement and headgear arrangement comprising: a winch to move the shaft enlargement arrangement (10, 150) up and down as and when required within the bored hole via cables extending between the winch and the shaft enlargement arrangement (10, 150); a kibble winder to move the kibble up and down through the hollow column (12, 154), also via cables extending between the kibble winder and the kibble; and a deck winder to move the plurality of support decks up and down, so as to separate the support decks from the shaft enlargement arrangement (10, 150) as and when required. a winch to move the shaft enlargement arrangement (10, 150) up and down as and when required within the bored hole via cables extending between the winch and the shaft enlargement arrangement (10, 150); a kibble winder to move the kibble up and down through the hollow column (12, 154), also via cables extending between the kibble winder and the kibble; and a deck winder to move the plurality of support decks up and down, so as to separate the support decks from the shaft enlargement arrangement (10, 150) as and when required.