Members of the Seminole State College President’s Leadership Class visited the Oklahoma National Stockyards in Oklahoma City on Jan. 30 to learn about the impact of the cattle industry on the state’s economy. The students toured the facility, including walking the catwalks built above the cattle holding lots, viewed the sale ring and watched videos from a previous sale. In Since the Oklahoma National Stockyards was founded in 1910, more than 102 million head of livestock have passed through the market.