
About us
The company
Desarrollo y Exploración Mineral S.A. has been developing mining, energy, port and logistics infrastructure projects in Argentina and the region since the 1980s.
What we do
DEMSA identifies opportunities, turns them into projects and takes them to the investment stage: it studies the site or the deposit, defines the technical and logistics scheme, manages approvals, sets up the corporate structure and finds the partners, operators and investors needed to execute it.
The company does not sell a standard capability. Each project builds its own team: DEMSA assembles its working teams by engaging consultants and specialists for each project.
Where we work
The historical backbone is the Paraná – Paraguay waterway, with operations in the ports of San Nicolás, Ramallo, Rosario, San Pedro, Zárate and Campana. Since 2019 the axis has extended westwards: Vaca Muerta, the bi-oceanic corridor and Chile's Biobío ports, with Chile, Peru, Colombia, Mexico, China and South-East Asia as commercial counterparts.
Values
How we work
Responsibility
Being aware of the impact our decisions have on the community and the environment we operate in.
Vision
Conducting business responsibly and sustainably, with a long-term perspective.
Collaboration
Logistics is about connecting dots. That idea compels us to work as a team, inside and outside the company.
President and founder
Alfredo Raúl Dematteis
President and founder of Desarrollo y Exploración Mineral S.A. (DEMSA). General manager of Importadora Sudamericana S.A.
Director and founder of CMI S.A. and founding partner of CMI Italia S.R.L., based in Sassuolo, Italy. Shareholder of Auca Mahuida S.A., for the development of solid hydrocarbon mining contracts with Petrobras. Member of the advisory committee of CIDEMAT, the mineral research and development centre within INTEMIN.
Companies and mandates
- Representative of Urucum Mineração — Companhia Vale do Rio Doce, Brazil
- Import, port services, storage and distribution of iron and manganese ore
- Pasek de España S.A. — mineral imports
- Petrobras / Interbras Comércio Internacional S.A. — steel and oil derivatives trading
- Tandanor S.A. — maritime and naval operations, tankers and ore carriers
- Engevix do Brasil
- Secretariat of Natural Resources and Human Environment — Matanza-Riachuelo Management Plan
- Corporate consultant for the Mercosur area (Buenos Aires) and the European Union (Italy)

Track record
Four decades of projects
- 1990
First imports of iron ore and manganese from the Urucum mines in Corumbá for SOMISA and Industrias Siderúrgicas Grassi.
- 1994
Representation agreement with Urucum Mineração (Companhia Vale do Rio Doce) with exclusivity for trading in Argentina.
- 1995
Integrated logistics project with ACBL and CVRD for ore transport in barge convoys of up to 30,000 tonnes.
- 2001
Foundation of Compañías Minerales Integradas S.A., with bentonite and asphaltite deposits in Chubut and Neuquén.
- 2007
Biocombustible Santa Fe S.A. at Terminal Puerto Rosario and incorporation of Minerals Ports S.A. for mining port logistics.
- 2008
Re-engineering and construction of the Zárate port on the Paraná de las Palmas for chemical and bulk products.
- 2013
Development of the Pilar Logistics Centre, sold in 2014 at its stage of progress.
- 2015
Private initiative for Pier 2 at the Port of San Pedro and the ML Port project in Zárate.
- 2016
New San Pedro Transhipment Terminal on Dos de Oro island and development of the Timbúes Agro-industrial Terminal.
- 2018
North–South Logistics Polygon in La Plata and the Pilar SME Centre.
- 2019
Campana Port Industrial Logistics Complex and the launch of the Vaca Muerta – Asia Pacific scheme.
- Hoy
Añelo Multi-logistics Platform, last-mile park at Fortín de Piedra and market development in Asia via Chilean ports.
Offices
Where we are
Buenos Aires
Argentina
Río de Janeiro
Brazil
Neuquén
Argentina
Partners and clients
Who we work with
Over its history DEMSA has worked and partnered with port, shipping, mining and logistics operators across the region: Companhia Vale do Rio Doce and Urucum Mineração, ACBL, P&O Maritime Services, Maruba, AGUNSA, Broom Group Logistics, Puerto Coronel and San Vicente Terminal Internacional in Chile, Belgrano Cargas y Logística, Sea-Side Logistic, and engineering, architecture and foreign trade firms in Argentina, Brazil, Chile and Italy.

Do you have a mining, energy or logistics project?
We work from the idea to the permit: structuring, engineering, approvals, partners and investors.










