[1] He attended the École Polytechnique, and was engineer for various railway companies including the networks of the East of France, the North of Spain, the Trans-Siberian and the Trans-Saharan.

During the Franco-Prussian War of 1870, he formed his workers into armed companies to replace the regular troops who had been sent to metropolitan France.

Although the government told him to suspend all public works, he continued them using his own money to avoid laying off workers.

He voted for reestablishment of the district poll (13 February 1889), for the draft Lisbonne law restricting freedom of the press and for the process to be followed in the Senate against General Boulanger.

[2] In 1893 Lesueur asked the government to reserve some types of industrial and agricultural activity to Algeria to reduce unemployment.