MINERAL PORTS AND STOCKPILES
Geometrica supplied two 70 m diameter and 35
m high domes for storage piles in the Herradura
plant, in Sonora, Mexico
The stacker is equipped to handle both dry and
wet bauxite – important considering the humidity
and rain that comes with the wet season in this
part of West Africa. The material is stored in two
stockpiles of 160,000 t each using the chevron
method, Bedeschi said, with the machine having a
capacity of 3,000 t/h and a 42 m long boom.
Speaking of storage, Geometrica has recently
completed a pair of circular domes for leading
Mexico-based precious metals miner, Penoles, in
Sonora, Mexico.
The Herradura mine is in the municipality of
Caborca, near the coastal city of Puerto Penasco,
and close to the US border. The mine started
propelled barges for transport to waiting bulk
cargo ships offshore, EGA said.
Bedeschi recently confirmed it had been
awarded a contract to deliver a bauxite storage
facility for the project by DTP Mining, part of
France-based Bouygues Construction. The scope
of supply included a stacker with a capacity of
3,000 t/h and a 420 m long storage belt conveyor,
with the commissioning phase performed in
September.
operating in 1997 and is one of the largest open-
pit gold mines in Mexico with an annual material
movement of around 120 Mt, according to the
designer, manufacturer and installer of domes and
space frames.
Geometrica, which has worked with the miner
before on other projects, supplied two 70 m
diameter and 35 m high domes for storage piles in
this plant. One of these is always operating in this
particular installation, according to the company.
The dome assembly was carried out using the
lift and place method, it said. “This procedure
consists of dividing the geometry into modules or
sections that are assembled individually, to later
be placed and form the dome,” Geometrica
explained.
The Geometrica system allows the structure to
be assembled manually in a safe, quick and
simple manner with local labour, according to the
company, with most work carried out at ground
level.
“Once each section is completed, it is lifted
using standard construction cranes and placed in
its position, allowing a smooth, planned, ordered
and efficient construction,” Geometrica said. “All
operations were performed without stopping the
material storage operation.”
Geometrica domes help control dust in mines
and industrial plants, which is of increasing
importance to mining companies today. This has
multiple benefits, the company says: “It boosts
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