Main production figures of the 1st quarter of 2018: mine production: 196 265 t Δ 102,3% to the business plan, Δ 135,4% to the previous year.   Ore processing: 198 477 t Δ 103,9% to the business plan, Δ 135,3% to the previous year.   Production of lead in concentrate: 2 576 t Δ 107,6% to the business plan, Δ 131,5% to the previous year.   Production of zinc in concentrate: 3 818 t Δ 102,3% to the business plan, Δ 153,3% to the previous year.   Lead concentrate production: 4 019 t Δ 105,0% to the business plan, Δ 125,0% to the previous year.   Zinc concentrate production: 7 655 t Δ 100,8% to the business plan, Δ 148,9% to the previous year.