Gannon Dunkerley & Company initially incorporated as a Private Ltd Company in 1924 was converted to Public Ltd. Company in 1948, after taking over by Indian Management. The Company carved out its name in the Civil Construction and gradually made its presence felt in both Industrial Buildings and infrastructure sectors throughout the country. GDCL developed confidence with successful completion of several major Civil Construction projects including RCC Bowstring girder bridges in South India with own in-house design. The Company also constructed major irrigation and hydroelectric projects, Hydro-Carbon Industry & Power Plants, water works and large factory buildings. The company pioneered in precast RCC Construction. From 1950 onwards Civil Engineering Construction became the main thrust in the Company's business. In order to undertake turnkey projects, the Company started its Mechanical and Electrical Department in mid 50s, to provide an integrated solution for industries, as a preferred partner of large business houses. In mid 70s the Company diversified into environment sector by building water treatment plants on turnkey basis. In 1990, the Company proudly contributed to the modernization of Indian Railways by establishing a pre-stressed concrete sleeper factory at Rayagada (Odisha). The Company has also taken keen interest in providing efficient material handling systems viz. the baggage conveyor belts at all major airports across the country and abroad. The company re-entered Infrastructure Sector viz. Highways, Railways, Bridges/Flyovers, Metros, etc. across the country in the last two decades. The Company has also taken up Irrigation projects viz. Canals and Irrigation structures. The company has IMS certification covering ISO 9001:2015, ISO 14001:2015 and ISO 45001:2018 to project itself as a Quality, Occupational Health, Safety and Environmental compliant construction company, reinforcing clients confidence. Gannon has a distinct privilege of successfully executing over 3000 projects in India and abroad. The company has four Civil Engineering Divisions located in Delhi, Mumbai, Hyderabad and Kolkata besides Water Treatment Division & Electro-Mechanical Division in Delhi to cater to the needs of clients across the country under one roof.