Trevor, You might try contacting Bruno Ancel, municipal Archaeologist at L'Argentierre la Besse, Haute Provence, France. He qualified as a geologist initially, and subsequently as an archaeologist. He has combined skills and knowledge from both professions to studying the stratigraphy and sedimentological characteristics of the mine wastes created by different types of ore processing methods at the medieval silver-lead mines at Les Gorge du Fournel. In particular, he has been able to relate geological characteristics of wastes to specific processes, and he has since gone on to apply that knowledge to other sites in France and elsewhere in Europe. If you want to contact Bruno, I suggest you contact Ian Cowburn [a regular contributor to this list] in the first instance, at SERVICE CULTUREL L'ARGENTIERE [[log in to unmask]]. I found his work absolutely fascinating when I visited L'Argentierre a few years ago in connection with the MINET, European Mine Heritage network. Hope this might be of some help. John Morris, Mining Heritage Trust of Ireland [www.mhti.com] -----Original Message----- From: mining-history [mailto:[log in to unmask]]On Behalf Of Trevor Dunkerley Sent: 14 August 2003 18:41 To: [log in to unmask] Subject: Re: Buddling Wastes Dear List, I would be interested to learn from anyone who has excavated a site where lead ore buddling has taken place with detail specifically of the stratigraphy of contexts where this waste has been deposited - colours, textures, geology of the wastes etc. Kindest regards, Trevor.