Nineteenth and twentieth-century grain threshing operations left imprints on the rural landscape and social fabric of midcontinental North America. Traces of threshing activity are seldom recognized archaeology, despite the importance of this activity to the history of agricultural development and rural lifeways in the Midwest and Plains regions. Changes in threshing technology followed a chronological sequence with inter-regional variability. Different stages of the technology can be identified and dated through specific archaeological signatures, which are discussed here.

中文翻译：

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中西部和平原脱粒作业的历史回顾及其考古特征

19 世纪和 20 世纪的谷物脱粒作业在北美大陆中部的乡村景观和社会结构中留下了印记。尽管脱粒活动对中西部和平原地区的农业发展历史和农村生活方式具有重要意义，但很少有考古发现。脱粒技术的变化遵循具有区域间可变性的时间顺序。该技术的不同阶段可以通过特定的考古特征来识别和确定年代，这里将讨论这些特征。