I would add to this list that for anyone dealing with sites that date to the mid
19C a copy of

Percy, John
 1864 Metallurgy: The Art of Extracting Metals from Their Ores, and Adapting Them
to Various Purposes of Manufacture. Iron and Steel.  John Murray, Albemarle
Street, London.

The chances are quite good that there is a plate of the equipment you are working
on.  While

Overman, Frederick
 1850 The Manufacture of Iron, In All Its Various Branches.  Also, a description
of forge hammers, rolling mills, blast machines, hot blast, etc. To which is
added, an essay on the manufacture of steel.   Henry C. Baird, Successor to E. L.
Carey, Philadelphia.

 is good for pictures, Overman was a founder and the work suffers from numerous
technical errors.  Overman's book on founding, however, is supposed to be very
authoritative

 1851 The moulder's and founder's pocket guide; a treatise on moulding and
founding. With an appendix containing receipts for alloys, bronze, varnishes, and
colours for castings, also tables on the strength and other qualities of cast
metals.  A. Hart, late Carey & Hart, Philadelphia.

Another good source, especially if you read French is:

Hassenfratz, J. H.
 1812 La Sidérotechnie, ou L'Art de Traiter les Minérais de Fer en Obtenir de la
Fonte, du Fer, ou de L'acier.  Chez Firmin Didot, Imprimeur de L'Institut,
Libraire, Paris.

 Much more complete than Diderot, but as far as I can tell, never translated.

Tim Mancl wrote:

> Jamie Brothers and his post from Peter King have covered well the
> differences between the features found associated with a bloomery, a
> finery, and a blast furnace. As well as a finery, a puddling hearth
> should be considered a possibility. As these suggestions point out,
> there's more than bloomery or blast. Moreover, there's more than a single
> type of bloomery or blast furnace, or finery or puddling hearth. To best
> identify what's on the ground, I'd suggest looking at Gordon's work for
> the U.S.
>
> Gordon, Robert B. 1997. Process Deduced from Ironmaking Wastes and
> Artefacts. Journal of Archaeological Science 24: 9-18.
>
> ---. 1996. American Iron, 1607-1900. Baltimore: Johns Hopkins University Press.
>
> ---. 1995. Material Evidence of Ironmaking Techniques. IA, The Journal of
> the     Society for Industrial Archeology. 21.2:69-80.
>
> For the bloomery process in particular see,
>
> Gordon, Robert B. and David J. Killick. 1992. The Metallurgy of the
> American Bloomery Process. Archeomaterials 6: 141-67.
>
> Egleston, T. 1880. American Bloomery Process for Making Iron Direct from
> the Ore. Transactions of the American Institute of Mining Engineers 8:
> 515-550 + plates.
>
> The American Bloomery Process is also covered quite well in theses on the
> Carp River Forge by Tim Tumberg, Jason Menard and Andy Sewall, which are
> located at Michigan Technological University. A fourth thesis focusing on
> analysis of tap slags from the site is forthcoming.