CEBTP of the 12th November 1990
CEBTP of the 12th December 1991

1/ Mass (volumetric mass) : 2687kg/M3
2/ Porosity : 0.69%
3/ Sound velocity : 5760 Meters/sec
4/ Stripe testing : 0.60 mm
5/ Compression testing : 127.4 MA
6/ Hardness : 12.5 MA
7/ Frost weathering 240 cycles : Non weathering
8/ Colour : yellow, grey or blue

The different sides of the building and paving stone are yellow, grey or blue according to the quarry's sun exposition and the depth of the layers : the first ones are yellow, come next the grey ones ending with the blue ones. Nevertheless the profile section of the building and paving stone is always blue-grey coloured.
Dated second era, cretaceous valaginian stage.

Paving stones are gauged immediately after extraction and classified by thickness : 2 to 9 cm.
Building stones are conditioned according to their direct purpose : proper and large construction stones or smaller wall building stones.

Complete detailed technical charts and or stone samples are available on demand.
All weather use.