20. When a Down Train consists wholly of loaded Waggons, and there is not any Break Waggon at hand to be sent down in front, the Breaksmen are first to see that at least =one-third= of the Waggons are provided with good and efficient Breaks; otherwise they must not venture to proceed with them down the Tunnel, until the deficiency is supplied by attaching an adequate number of empty Waggons, with serviceable Breaks, from the stock in the Sidings: but the Break Waggon must, if possible, in all cases be used. 21. When a Train is composed of loaded and empty Waggons, two empty are to be considered equal to one loaded. Not more than =thirty-five loaded= Waggons may be taken down the Tunnel at any one time, and two Breaksmen must attend each Train. None but the regularly appointed Tunnel-breaksmen must ever attempt to convoy a Train. 22. Signal Lamps and Hand Lamps must be kept properly trimmed and burning. A Red Signal Lamp, lighted, must always be fixed on the rear of the last Waggon going down the Tunnel, and a Green Signal Lamp lighted and fixed upon the most conspicuous part of the front Waggon in the same Train. They must both be returned to Edge Hill by the first set up. No persons must ever leave any Waggon standing upon the Up Line within the Tunnel, nor upon the Down Line, without fixing a well-lighted Red Signal Lamp thereon, and remaining with it until removed to the bottom. The signal to =stop= must be made by waving the Hand Lamp =Up and Down=. The man on duty at the Wheel must look out for Waggons coming Down, and pass the word to the Breaksman whether or not the Line is clear; the exchange of such Signal to be made by waving the Hand Lamps =horizontally=, and then the Breaksman may =with caution= proceed. The Signal to “_come forward_” to be made by waving the Hand Lamps =round=. 23. Each set of Waggons drawn up the Tunnel to consist of not more than =six=, until further orders. The man on duty at the Wheel must examine the Endless Rope, the Messengers, the Coupling Chains, the Van Doors, and the Loads upon the Waggons, to see that all is right and safe to pass upwards, that the Coupling Chains are properly hooked, that the last Waggon is provided with a good and powerful Break, and then the same Breaksman must proceed with the set, and look out for Down Trains, to apprize the other men in charge thereof whereabouts any Waggons are before them, to report any impediments in the Tunnel to the Superintendent or Goods Manager. 24. When the Rails on the Bank Head, or within the Tunnel, are wet and slippery, they must be sprinkled with =sand=, a large stock of which is kept constantly at the top of the Tunnel to supply the Break Waggons.