Specifically, the mine north of Ong Sao hill in Ben Tam ward is licensed to be exploited by Dai Phong Transport and Construction Joint Stock Company with a reserve of more than 2 million m3.

The mine at Hang Ho hill in Hoang Tien ward is expected to be nearly 3.7 million m3 and the mine at Trai Met hill and Trai Quan hill, Ben Tam ward is about 3.97 million m3, both licensed for exploitation by the joint venture of Binh Minh HD68 Joint Stock Company and Development Company No. 1 - LLC.

The mine in Ong Sao hill in Hoang Tan and Ben Tam wards has an estimated reserve of more than 1.1 million m3 and is exploited by Phuong Hoang Construction and Trading Joint Stock Company.

The mine at Trai Tuong mountain, Pha Lai ward is exploited by Chi Linh Construction Materials Production Company with an estimated reserve of 3.7 million m3.

Currently, in Chi Linh City, there are 2 mineral mines for filling materials that are being supplied to the market with a total remaining reserve of about 670,000 m3. That is the mine in Ngang Vong hill, Thai Hoc ward, exploited by Tan Thanh Trading One Member Co., Ltd., with a remaining reserve of nearly 460,000 m3, and the mineral mine in Pha Lai ward, exploited by Minh Hang Production, Trade and Service Joint Stock Company, with a remaining reserve of nearly 210,000 m3.