What are the challenges of ventilating deep mines?

Dec 30, 2009 ... The original English spelling is 'draught' which, in this context, means: "A vessel's minimum depth of water in which to float" - the spelling 'draft' is an ... It's rich, it's creamy, and it's black (well actually, if you look closely, Guinness is ruby red in colour but don't tell anyone!). It's everything it promises ... Feb 4, 2025 ... Simple DIY solutions such as draught-excluders and filler can help you to draught-proof your windows and doors so your home feels warm and cosy and you save ... The Draughtboard Shark is a stocky species that has a short broad head and widely spaced denticles. The species is endemic to Australia occuring in depths to at ... Jun 3, 2023 ... Draught beer is brewed traditionally. It ferments naturally in a cask and is directly consumed unpasteurized from a cask instead of a can or bottle. Feb 9, 2017 ... What is meant by boiler draught? Boiler draught may be defined as the small difference between the pressure of outside air and that of gases ... Nov 5, 2015 ... A draught beer (AKA: spelt draft) is served from a cask or keg instead of a bottle or can. You can get draught beer in a "can form". Apr 10, 2025 ... Deeper draughts generally offer better upwind sailing performance and stability in rough conditions, as seen in racing yachts and ocean-crossing ... a game for two people, each with twelve circular pieces that they move on a board with black and white squares. Draught Latrine; toilet. And he saith unto them, Are ye so without understanding also? Do ye not perceive, that whatsoever thing from without entereth into the ...