Riverton Livestock Auction feeder cattle sales report for Tuesday, Sept. 20. Sales take place weekly now. This week: 605. Last sale: 466. Last year: 2,020. Compared to last Tuesday sale slaughter cows and bulls mostly steady with lower undertones noted, feeder calves unevenly steady instances 2.00-3.00 higher with larger offering yearlings with no comparisons available from market last week. Demand moderate to good. Supply included: 78 percent feeder cattle (32 percent steers, 68 percent heifers); 16 percent slaughter cattle (63 percent cows, 37 percent bulls); 6 percent replacement cattle (100 percent stock cows). Feeder cattle supply over 600 lbs. was 70 percent.