About HMMH


HMMH is an international leader in environmental and transportation planning including noise and vibration control, air quality analysis, airport and airspace planning, and sustainable energy solutions.


What We do

HMMH solves complex problems affecting our environment. With three offices throughout the country, we serve government and private industry clients with a broad range of innovative and effective solutions. Our core values are to serve clients with excellence and honesty, to respect others, foster teamwork and seek growth opportunities. HMMH prides itself on exceeding client expectations and making clients for life.

About Us - HMMH

Innovation and Research

A key differentiator between HMMH and other firms is that we advance the knowledge base in addition to applying the science of acoustics and noise modeling to specific projects.  Clients retain HMMH to provide specialized technical assistance on a broad range of emerging issues where gaps in existing regulations, policies, and procedures require a novel application of experience and knowledge.

HMMH is involved in research and policy setting on key noise issues that airports face on a daily basis, including the single largest aircraft noise research project currently being conducted by the FAA. We conduct research directly for the FAA and the National Academy of Science’s Cooperative Research Programs, and we provide expert advice to the FAA’s Center of Excellence for Alternative Jet Fuels and Environment, ASCENT. In addition, HMMH has also developed several proprietary software tools such as InFLIGHT™, RealContours™, and SoGlare™.

The shaded areas above represent the states in which HMMH holds WBE, SBE, and/or DBE certifications.

Certified Women-Owned (WBE) and Disadvantaged Business Enterprise (DBE)

HMMH is certified as a Women-Owned Business Enterprise (WBE) in our home state of Massachusetts and/or as a Disadvantaged Business Enterprise (DBE) by over 30 agencies across the country. We are also recognized as an Economically Disadvantaged Women-Owned Small Business (EDWOSB) by the U.S. Small Business Administration (SBA).

For additional information regarding our current and pending certifications, please contact us»

HMMH Federal Contracts

Federal Contract vehicles

Our history with and current performance of numerous federal and civilian contracts is living proof of HMMH’s expertise and performance. Find out more about our current and future work for the United States armed forces and other federal agencies.



HMMH professionals are dedicated, caring, responsible individuals who enjoy both the challenge of using their quantitative, analytical and communication skills and the camaraderie of contributing in a team environment.

At HMMH, you will have the opportunity to perform meaningful work in a unique consulting atmosphere that promotes integrity, cooperation, respect and opportunities for professional growth. You will work with and learn from many of the premier acoustic specialists in the transportation field.


HMMH Founders From left to right: Nicholas Miller, Andrew Harris, Carl Hanson, and Robert Miller


Harris Miller Miller & Hanson Inc. (HMMH) was founded in 1981 by Andrew Harris, Nicholas Miller, Robert Miller, and Carl Hanson to provide the highest quality noise consulting services to airports.  A spin-off from Bolt Beranek and Newman (BBN), HMMH’s founders worked on some of the earliest, ground-breaking transportation noise challenges, including early work for the Port Authority of New York and New Jersey and Amtrak’s Northeast Corridor.

Today, in addition to our noise practice, HMMH addresses emerging and technologically challenging projects, including air quality analysis, airport and airspace planning, and climate and energy solutions. HMMH is nationally recognized for tackling complex problems affecting our environment, while remaining faithful to our founders’ legacy of technical excellence and client satisfaction.

Do You Have Questions?

HMMH’s experienced and trusted consultants are here to solve your complex environmental issues. Reach out today and discover what true collaboration and innovation means.

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