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About us

We are bold, innovative, efficient and focused on fulfilling our established goals.
We are constantly learning and sharing experiences. We are CLAM.


CLAM has 25 years of experience in the consulting and management market in engineering and projects, especially in the area of environmental issues (ecology, environment, hydrology, geochemistry, waste, monitoring, licensing, among others), with a relevant history of services both in the industrial, service and mining sectors. Managed by its partners José Cláudio Nogueira Vieira, Marcelo Rocha Figueiredo and Leonardo Inácio de Oliveira, CLAM´s technical team is made up of geologists, engineers, geographers, biologists, veterinarians, social scientists, analysts and specialists in many areas of knowledge related to environmental issues, in addition to supervisors, technicians and assistants for the various types of field work developed. CLAM pays special attention to OHSE issues and has a robust OSHSS that is essential and inseparable from its activities.

Our values

We respect the human beings
• We treat everyone how we would like to be treated.
• We respect and value employees.
• We are transparent and truthful in interpersonal relationships.
We cultivate a positive mindset
• We are committed to success.
• We always act as owners of the company.
• Our team is our strength.
• We innovate and transform.
We work efficiently and effectively
• We do more and better with less.
• We always try to be the best at what we do.
We always improve our management and leadership
• We educate by example, with discipline and commitment.
• We comply with our agreements without neglecting to contribute to continuous improvement.
• We standardize and implement best practices.
We act and evolve with humility
• We understand that success is constantly being built.
• We act with simplicity.
• We always aim at learning more and we  are never satisfied.


Act proactively in favor of sustainability of society and natural resources.


To be a reference and leader in the segment we operate in, internationally recognized for delivering innovative solutions, technical excellence and the ability to attract and retain talent.


To provide innovative solutions with emphasis on customer satisfaction, the evolution and recognition of employees, the sustainability of business and the development of communities, generating value for shareholders.
Our team

Qualified  professionals

CLAM teams are made up of engineers, geologists, biologists, geographers, environmental managers, veterinarians, analysts and specialists in social communication, among other specialties in addition to support professionals, all of whom are very well trained, qualified and united in the purpose of efficiently achieving their agreed goals.
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Utmost care

Safety  and health, our priorities

CLAM has specialized teams, dedicated  with the utmost
attention and commitment to the management of health
and  safety at work, a topic of recognized importance by
all employees and senior  management.
Utmost care
Alazão project

Socio-environmental initiatives

CLAM values ​​and knows its responsibility to invest in actions that help transform the world into a better place. Alazão Project works with the reception  and treatment of large animals that are victims of abuse and neglect.

Will you join us in this fight?
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Meet our


José Cláudio Nogueira Vieira

José Cláudio Nogueira Vieira heads the commercial and market intelligence department. He is a Civil Engineer (UFMG, 1996) with a postgraduate degree in Real Estate Project Management from FUMEC and an MBA in Finance from the Brazilian Institute of Capital Markets.
José Cláudio Nogueira Vieira
Chief commercial director

Marcelo Rocha

Marcelo Rocha Figueiredo is responsible for all administrative and financial management at CLAM. He is a Civil Engineer graduated from the School of Engineering at UFMG in 1996 with several courses and postgraduate courses in the area.
Marcelo Rocha
Administrative and financial director

Leonardo Inácio de Oliveira

Leonardo Inácio de Oliveira is Director of the operations sector at CLAM. Graduated in Civil Engineering (UFMG, 1996), with Master in Environmental Engineering (Hydrogeology and Soil Contamination, DESA / UFMG, 1999) and Doctorate in Environmental Engineering (Hydrogeology and Soil Contamination) from the University of Michigan (USA, 2004).
Leonardo Inácio de Oliveira
Operations Sector Director
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Our team


In 2022, we achieved recognition of competence from ABNT NBR ISO/IEC 17025 - General requirements for laboratory tests by the Minas Gerais Metrological Network (RMMG). The seal was awarded after a few steps, as well as diagnosis, planning, implementation and auditing. . Showing all the commitment of CLAM to continue being a model company, when we talk about consulting and management in engineering and projects related to the environment.
Certified by
In August 2020, awarding the efforts made  by its employees, CLAM was recognized for its performance in the Legal  Compliance Assessment conducted between 08/04/2020 and 08/06/2020 by the  Health and Occupational Safety Management of the Vale’s Special Board for  Redress and Development.
Certified by
In 2018, we were pleased to receive the Safety Quality Award, which we accepted with great pride due to our performance in Vale's Eliezer Batista Complex Project (S11D).
Certified by
In 2021, we were chosen as Outstanding Suppliers in Minas Gerais. Award received for our performance in the Contract Management and Environment of Vale's South/Southeast Corridor.
Certified by
Assessment of Physical Conditions
Assessment of Physical Conditions

We  are committed to the future, and you can be a part of it.

Learn more