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This is the construction of a metro station in a tunnel, requiring and very short project turnaround time. It was necessary to come up with a method that would enable the construction of large scale side walls, leaving open only a center strip of 4.50 m to execute thereafter.It is considered the construction work with the largest cross section in Brazil.

The Sulfuro Primario de Cerro Verde Project is a macroproject for the expansion of the Cerro Verde mine, which has the objective of tripling copper production.Experience gained from the Toquepala Project was of great help to ULMA Construcción when confronting the new challenges posed by this work. It is also worth mentioning that the largest construction companies in Peru participated in this project.The project encompassed the construction of the first, second and third crushers, Silos, Mills, Flotation System, Grinder, Recycling Chamber, Filters, Warehouses, etc. Some of the most important structures to be specially considered are the silos, which are 41 m high structures with an area of 1625 m², and the mills, which are large block structures of 5 m high and within an area of 1550 m².

The Leachable Deposits Formation Project is part of the Toquepala mine modernization plan. The primary structure is the Crushing Building, which has the mission of crushing the large volumes of minerals hauled to the building. The Primary Crushing building stands 41 m tall and covers a surface area of 390 m². The crushing building was divided into two zones: the primary zone includes the main slabs (three total) and is divided into four levels, while the secondary zone includes the auxiliary slabs (four total) and is divided into four levels. The Primary Crusher also included the 41 m high cut-off wall construction with total slurry wall surface area of 1,800 m². Approximately 7,000 m³ of concrete was poured in the crusher building.

Built over the Duero River, this is one of the most attractive and impressive bridges in the city.
Designed by Teófilo Seyrig, a partner engineer in the design of the Eiffel Tower, the bridge was revealed on the 31st of October 1886. It is constructed of two metallic levels that are supported by a large iron arc and 5 pillars. It is a double bridge. The upper level has a 391.25 meter extension and the lower has a 174 meter extension.
Oporto Metro flows above it, and the bases on which its two ends are supported are joined by another lane that connects the two banks.