LIST OF FIGURES. 



PAGE. 



Fig. 212 A very Self-indicating Colliery Weighing Machine ... 340 



Fig. 213 Check Brake 241 



Fig. 214 Coal Boxes 242 



Fig. 215 Tension Pulley 344 



Fig. 216 Little Giant Piston Air Drill 346 



Fig. 217 Norwalk Compound Air Compressor 347 



Fig. 218 Ingersoll-Serjeant Compressor 348 



Fig. 219 Sirocco Fan 350 



Fig. 220 Locomotive Built in 1858 351 



Fig. 221 No. 9 Locomotive, Pelaw Main 352 



Fig. 222 Automatic Stoker 353 



Fig. 223 Entrance to Main Tunnel 355 



Fig. 224 Slack Box 357 



Fig. 225 Bull or Dragbar 358 



Fig. 226 A. B.C. Fan for Induced Draught 360 



Fig. 227 Air Shaft 362 



Fig. 228 Ambulance Waggon 364 



Fig. 229 Flexible Coupling 365 



XIII. 



