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FG mandates 70% stone, 30% dust base mix for road construction 

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ministry of works

The Federal Government has issued a directive for road construction projects across the country, mandating a mix of 70% stone base aggregate and 30% dust base for the foundation of all road works.  

This instruction was emphasized by the Minister of Works, David Umahi, who instructed all Controllers of Works to ensure strict adherence to this specification, as detailed in a statement on the ministry’s website. 

The emphasis on the directive was brought to the forefront during an inspection on Friday of the Sapele-Agbor road dualization project (Route No. 3) in Delta State, a project being executed by CGC Nigeria Ltd. 

Regarding the road project he inspected, Umahi praised CGC Nigeria Ltd. for its satisfactory progress but emphasized the importance of adhering to the government’s guidelines.  

He instructed the company to follow the existing asphalt protocol, pulverize it, and apply a 20cm stone base, explicitly advising against the use of a dust base.  

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