As firefighters brought the 20,690-acre Alkali Fire burning 14 miles north of Maybell to 50 percent containment yesterday, other crews responded to numerous other starts. Cloud cover and higher humidity kept fire activity minimal on the Alkali Fire yesterday, with most of the acres having burned the night before. Approximately 70 firefighters and six engines are working the blaze. It was reported Wednesday afternoon and its cause remains under investigation. A homestead cabin, barn and propane tank were destroyed Wednesday night. The fire is primarily on private land, with a small amount of BLM land. About 30 firefighters made good progress containing the 276-acre Carl’s Hole Fire on BLM land about 30 miles west of Meeker, although a specific containment figure was not available. The fire was started Tuesday night by lightning. No structures are immediately threatened. Since Wednesday afternoon, resources from the Northwest Colorado Fire Management Unit and its cooperators have responded to at least 17 other fires. Three single-engine air tankers and two helicopters have helped keep the fires small.