554 THE COLLIERY GUARDIAN March 16, 1917. Purchasers’ Guide to Advertisers’ Specialities—(continued). Tools. Fell, C. A. Haden & Co. Hardy Patent Pick Co. Ld. Howell & Co. Ld. Towers (Cooling). Davenport Engineering Co. Ld. Transformers (Electrical). British Electric Transformer Co. Ld. Davis, John, & Son (Derby) Ld. Transport Plant. British Ropeway Engineering Co. Ld. Haggie, R. Hood, & Son Ld. Tube Fittings. Dixon, S., & Son Ld. Lewis, Edwin, & Sons. Russell, John, & Co. Ld. Scottish Tube Co. Ld. Stewarts & Lloyds Ld. Tubes (Iron and Steel). Allen, W. G., & Sons, (Tipton) Ld Dixon, S., & Son Ld. Howell & Co. Ld. Lewis, Edwin, & Sons. Lewis, Wm., & Son. Russell, John, & Co. Ld. Scottish Tube Co. Ld. Stewarts & Lloyds Ld. Wellington Tube Works Ld. Tub Greasers and Controllers. Evans & Dodd. Hadfields Ltd. Neil, J. & J., & Co. Theedam, E. C., Ld. Tubs (Colliery). Allen, Alfred, & Son Ld. Allen, W. G., & Sons, (Tipton) Ld Butterley Co. Ld. Du Croo & Brauns Hadfields Ltd. Tunnel Segments. Head, Wrightson & Co. Ld. Turbines. Beiliss & Morcom Ld. Greenwood & Batley Ld. Turbo Alternators. Bruce Peebles & Co. Ld. Turntables. Du Croo & Brauns Isca Foundry Co. Ld. Summerson, Thos., & Sons Ld. Wright’s Forge & Engineering Co. Ld. Tuyeres. Royles Ld. Russell, John,