Market disruption investigations require public notice, disclosure, participation rights, and fact-based findings where interested parties withhold information. Investigations into market disruption or threat of market disruption arising from increased imports must begin with a public notice stating the article involved, initiation date, factual basis, reasons, address for representations, and time-limits for responses. The Director General must circulate the notice and underlying application to specified governmental bodies, known exporters, the government of the People's Republic of China, and other interested parties on request. The rule also provides for information requests, participation by industrial users and consumer organisations, written confirmation of oral submissions, disclosure of evidence among participating parties, and reliance on facts available where cooperation is withheld.