[Dujon] That's what Google is for. Or, as it used to be called, the Yellow Pages. Or the small ads in the back of your local newspaper. Or ask at any house with a smoking chimney.
I am now virtually convinced that e-technology is ringing the death knell of common sense and 'nouse'

(Dujon) Bicarb's no good - you want proper soda, Na₂CO₃. Alkaline enough to dissolve aluminium. Try it in a saucepan with a bit of heat. It'll fizz nicely. Don't do it for too long or the pan will have a hole in its bottom which is all very well for us humans but not cooking vessels. As for coal, this can be obtained from any of Britain's many preserved steam railways and is of a quality high enough to be burned at the ferocious rate required in a locomotive firebox. Or you could get it direct from Poland as we don't have any mines left. About £80 a ton. With you on pegs. Use wooden dolly pegs; they last for ever.
(pen) esp. satnav. Recently someone was given several column-inches in the Grauniad Technology Section to describe how inadequate the device was because it had got her lost driving from Wolverhampton to Stoke and she nearly landed up in Shrewsbury. If that had happened to me I'd have kept very quiet about it, not wishing to appear a complete tosser, but you know what people are like these days. I won't say any more because I can get really sarky.

Quite. I always like to have a lookie at a map before I set off, so at least I am informed about the route/heading/places en route. People who blindly trust a SatNav are eejuts.

When I taught engineering at night school I always told students that they had to know the answer before using a calculator. They used to laugh at this but I used to point out that you first had to estimate the decimal place otherwise the calculator answer could be orders of magnitude out. This principle applies to all technology, it is useful for accuracy but you need to know what you are doing before starting.

[penelope] Around my neck of the woods it would be hard to find a house with a chimney, never mind one with a proper coal burning hearth an 'ob and a couple of hunting dogs to keep one's feet warm. A few decades ago oil burners were all the rage but the cost of fuel seems to have put those foul things to rest - even the use of the common wood burning heaters seem to be well and truly on the decline. After your comment (mine was meant to be light hearted) I did look at Google and my local paper's classified advertisements. Unfortunately my common sense and nous came to naught. Should I ever need a scuttleworth of coal I shall be trawling the local railway lines for inadvertent sullage. :)