NEWS

2 VFMSTA: Thank-you letter

3 Pham Chi Cuong: VFMSTA: Overview of activities in 2015 and toward to 2016

7 Nguyen Van Sua: Vietnam Steel Industry in 2015

11 Pham Cong Huong: Reality and developed orientation on material manufacture of Vietnam National Coal - Mineral Industries Holding Corporation Limited

15 Tran Vu Nghi: Safeguard investigation into imports of steels

RESEARCH

28 Tran Trung Toi, Nguyen Kim Thiet, Dinh Tien Thinh, Dinh Pham Thai: Building of E-pH diagram of Bi-S-Cl-H2O for the bis- muth sulfide concentrate leaching study

33 Le Hong Thang, Pham Thao, Tran Quoc Lap, Nguyen Hoang Viet, Nguyen Thi Hoang Oanh: Synthesis of ferrite spinel ZnFe2O4 by high-energy ball milling

37 Nguyen Dang Khoa, Luu Phuong Minh, Dao Minh Ngung: Changes of microstructure and mechanical properties of SPD-ed Cu99,9 and Al alloy 7075 and a processing tech- nique proposed for hard-to-deform metals and alloys

45 Tran Quoc Lap, Pham Thao, Le Hong Thang, Nguyen Hoang Viet, Nguyen Thi Hoang Oanh: Magnetic properties of zinc ferrite synthesized by high-energy ball milling

ENVIRONMENT

49 Nguyen Duc Khien: Polluted gases and their harm