On 11 January 2011 Laogai Research Foundation released a report, "Building on the Backs of Prisoners: Examining the Imports of a Canadian Construction Company"...which said that Inland Screw Piling, a Canadian construction company, had imported products from Xinxiang Zhongke Mining Equipment Company, a factory in Henan Province, China that allegedly uses prison labour. Business & Human Rights Resource Centre invited Inland Screw Piling, Xinxiang Zhongke Mining Equipment Company and the exporter named in the report, Qingdao Yijia Metals Minerals and Machinery, to respond...[Inland Screw Piling and Xinxiang Zhongke Mining Equipment Company respond; Qingda Yija Metals Minerals and Machinery did not respond. Page also contains subsequent rejoinder by Laogai Research Foundation and further comments from Xinxiang Zhongke Mining.]