general knife river operates construction materials and contracting businesses headquartered in alaska, california, hawaii, idaho, iowa, minnesota, montana, north dakota, oregon, texas, washington and wyoming. these operations mine, process and sell construction aggregates (crushed stone, sand and gravel); produce and sell asphalt mix; and supply ready--mixed concrete. these products are used in most types of construction, performed by knife river and other companies, including roads, freeways and bridges, as well as homes, schools, shopping centers, office buildings and industrial parks. knife river focuses on vertical integration of construction services to support the aggregate based product lines including aggregate placement, asphalt and concrete paving, and site development and grading. although not common to all locations, other products include the sale of cement, liquid asphalt for various commercial and roadway applications, various finished concrete products and other building materials and related contracting services. A-umkhiqizo - kuyini? A liyinqolobane amavithamini namaminerali. Kufanele kube impoqo. Nokho, ungatholi uhileleke kakhulu ngokomzwelo. Abaningi by-imikhiqizo yakhiwa cholesterol. Ngakho-ke, ochwepheshe batusa ukuba udle hhayi ningi than kabili ngesonto. Ngaphezu kwalokho, umkhiqizo ingaqukatha cadmium kanye nomthofu. ukukhetha ngokucophelela offal eluhlaza. Uma ungabaza, give up ukuthenga. Khumbula ukuthi umkhiqizo yekhwalithi ephansi kungaba nezilwanyana ezincane eziyingozi samanje. Njalo ukhetha ngokucophelela imikhiqizo bamshaya impilo yabo.