[holding answer 21 June 2007]: Imports of shale for construction or similar uses cannot be distinguished from imports of similar clays. HM Revenue and Customs Overseas Trade Statistics give the following figures for imports of HS271410 bituminous or oil-shale and tar sands:
Year/quarter Weight (thousand tonnes) 2004 Q1 24 Q2 41 Q3 278 Q4 318 2005 Q1 608 Q2 596 Q3 146 Q4 341 2006 Q1 132 Q2 75 Q3 Q4 1 2007 Q1 1 Source: Overseas Trade Statistics