Miami Nation Stronghold, LLC (Stronghold) is owned by the federally recognized Miami Tribe of Oklahoma and is certified by the SBA as a Tribally Owned 8(a) business. Stronghold designs, builds, and installs customized modular structures that are used for logistics and operational tasks storm shelters, safe rooms, and other critical defense and disaster response, and security environments. Stronghold is a producer member of the National Storm Shelter Association (NSSA) and provides structures to government agencies (from local school districts to Department of Defense), commercial businesses, and private citizens.

Stronghold is a SBA certified Tribally owned 8(a)

Company Data
DUNS 117044869

Primary NAICS 332312 Fabricated Structural Metal Manufacturing

Single $25 million
Aggregate $100 million

Tony Martinez, General Manager/Vice President of Sales, tmartinez@mn-e.com
Gregg Beechwood, Operations Manager, gbeechwood@mn-e.com

Major Corporations

  • Microsoft
  • Google
  • FedEx
  • Wal-Mart
  • Caterpillar
  • Budweiser
  • Michelin
  • Dupont
  • Archer Daniels Midland
  • Nestle Purina
  • TransCanada Pipeline
  • Magellan Pipeline
  • Nucor-Yamato Steel
  • Clayton Homes
  • Syngenta Seeds
  • Siemen’s Energy
  • Dan Foss Drives
  • H.E. Williams


  • U.S Department of HUD
  • U.S. Department of Energy
  • U.S Fish & Wildlife Service
  • U.S Department of Defense
  • Nebraska Public Power District
  • Atlanta Gas & Light
  • Greensburg, Kansas
  • Missouri Gas & Energy
  • City of Fort Scott, Kansas
  • Indiana-Michigan Power
  • Johnson County Ambulance District
  • Wilson’s Creek National Battlefield
  • Cook Nuclear Power Plant
  • St. Francis Power Plant
  • University of Central Missouri
  • Arkansas Municipal Airport
  • Federal Alliance For Safe Homes

Multinational Contractors

  • Balfour Beatty
  • Turner
  • Holder
  • Mortenson
  • Hensel Phelps
  • Whiting-Turner
  • Structure Tone
  • Neumann Brothers

U.S. Military

  • Whiteman Airforce Base
  • Air National Guard
  • Missouri National Guard