In 1978 Ansec Sizers first created the A200 Mini Sizer, a compact single shaft Mineral Sizer, mainly for use in the British Coal Board era for underground crushing.  Their compact size incorporated a robust design which led to sales in the hundreds for use across British Coal Mines.

Ansec further developed from this, progressing up to the A550 Twin Roll Sizers for larger tonnages in excess of 1000 tonnes per hour.

The aquisition of Ansec Sizers by Derek Parnaby Cyclones in 2005 has seen a significant improvement and development on top of an already successful design.