In this thesis the author seeks to identify and analyse the main factors
which influenced the economic and technological development of the slate
quarries of the Nantlle Valley, Gwynedd. The subject is characterised by
a complex interaction of a variety of external and local factors, and is
consequently discussed thematically. Whenever possible. the local trends
are placed within the context of the general history of the North Wales
slate industry. which itself was subject to the broader economic and
technological developments in the U.K. and other countries.
CHAPTER 1 discusses the general development of the slate industry at
Nantlle from its possibly Roman roots to the present day. This is done
within the context of the industry regionally; and with reference to the
role of market forces on the fortunes of the individual quarries.
CHAPTER 2 analyses the sources of capital and investment which was
vital for the development of the quarries. categorises the different types
of capital structures which were found in the industry in response to
changes in legislation and financial systems, and attempts to analyse the
overall profitability of the quarries.
CHAPTER 3 discusses the modifications required at Nantlle in the
quarrying and production methods, to cope with the local conditions of
geology, topography and landowning.
CHAPTER 4 charts the mechanisation of the various processes involved in
slate quarrying, and identifies the role of the Nantlle quarries in the
application of various technologies to different strands of the industry.
CHAPTER 5 discusses the economics and practical problems of
transporting the finished products from the quarries to the markets, and
describes the different systems used locally at various periods of time.
APPENDICES contain additional data and technical information,
supplementing that provided in tables and illustrations within the text.