Liebherr L 556 - Manual (Page 35)

Quarrying // 35
discontinued the service. Apart from the environmental impact,
that is a cost factor that we cannot neglect. One train can take
45 articulated trucks off the road,” Christian Mazière complains.
The quarry is split into two sectors: the quarry it self and the area
for preparation and shipping. Blasting operations have been
outsourced to the company Alpharoc. Within the quarry, the
material is transported by Dumont TP with two articulated trucks
of the 50-ton class.
The R 960 SME is primarily used for loading after every blasting.
If necessary, excessively large blocks are made smaller by a
Liebherr R 924 crawler excavator fitted with a hydraulic hammer.
The dumpers secure replenishments for a buffer stock of 11,000
tons in front of the crusher. That allows the R 960 SME and the
two dumper trucks to be used for spoil work when this is needed.
The crusher used is a hammer crusher, with two gyratory crushers
attached to produce a 0/8 grain. Depending on the customer’s
specifications and to guarantee constant homogeneity of
production, a chemical test is conducted internally of various
batches of material. These batches are then mixed and put into
stock until they are shipped.
Loading after blasting: the R 936 SME.
The drivers especially appreciate the simple controls of the
wheel loaders.
Sector:
Size of company:
Founded:
Location:
Managing Director:
Website:
Liebherr machines
in operation:
Company profile
Carrière de Montebras
Mineral raw materials for the ceramics industry
11 employees
1859
Soumans (23)
Christian Maziere
www.imerys-ceramics.com
R 960 SME, R 924 with hydraulic hammer,
3 L 566 wheel loaders
Sector:
Size of company:
Founded:
Location:
Managing Director:
Website:
Liebherr machines
in operation:
Company profile
Carrières d’Ambazac
Quarrying of construction materials
45 employees
1973
Ambazac (87)
Jean-Roger Delanne
www.novapierre.com
www.carrieres-ambazac.fr
L 550, L 566, L 580, L 586, P 724, PR 724,
R 936, R 944 C
Quarrying in profile: Ambazac and Montebras