Harris Harris is a mechanical contracting company that specializes in design and engineering, construction, manufacturing, controls, service, conveyors, and end-to-end building systems. | ![]() MacDonald-Miller MacDonald-Miller Facility Solutions is a company which offers contractor services in mechanical engineering, design-build construction and custom metal fabrication. | Apollo Mechanical Contractors Apollo Mechanical Contractors (also known as Apollo Sheet Metal) is a company that provides construction management solutions. | ||
Founding Date | Founding Date 1948 | Founding Date 1966 | Founding Date 1965 | Founding Date 1981 |
Type | Type Private | Type Subsidiary | Type Private | Type Private |
Tags | ||||
Locations | Locations Saint Paul, US HQ Bellingham, US Blackfoot, US Bowie, US Brisbane, US Garden City, US Las Vegas, US see more | Locations Little Island, IE HQ Antwerpen, BE Kastrup, DK Erkrath, DE Dublin, IE Amsterdam, NL Stockholm, SE see more | ||
Employees | Employees 1,6093% increase | Employees 1,3501% increase | Employees 1,3012% increase | Employees 2,000 |
Operating ⚠ | ||||
Projects | Projects N/A | Projects N/A | Projects 83 (Feb, 2022) | Projects 80 (Feb, 2024) |
Types of Services | Types of Services N/A | Types of Services N/A | Types of Services 3 (Feb, 2022) | Types of Services 9 (Feb, 2024) |

Dornan Engineering Holdings is a building services engineering and contracting company.
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MacDonald-Miller Facility Solutions is a company which offers contractor services in mechanical engineering, design-build construction and custom metal fabrication.
View companyApollo Mechanical Contractors (also known as Apollo Sheet Metal) is a company that provides construction management solutions.
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