1. Alice, aggregates and tax: muddy waters
by Colin J. R. Braithwaite, and Rachel A. Heath
Quarterly Journal of Engineering Geology and Hydrogeology
Volume 48(3-4):
November 1, 2015
© 2015 The Author(s)‏

2. Quarry face illustrating typical interbedding of sandstones and ‘shales’.
Quarry face illustrating typical interbedding of sandstones and ‘shales’. The wide variation in the relative proportions of these components within the face should be noted.
Colin J. R. Braithwaite, and Rachel A. Heath Quarterly Journal of Engineering Geology and Hydrogeology 2015;48:
© 2015 The Author(s)‏