Weir has motored ahead after the engineer said trading for the nine weeks to 4 June has been stronger than expected, with order output for the 22-week period up 25%.It also confirmed it will acquire Kuala Lumpur based Linatex for £138m as it expands its global reach. Linatex, which provides wear-resistant products to the mining and sand industries, fits into its strategy of growing its global capability.Fellow engineers Cookson, Senior and Morgan Crucible are up in sympathy.With gold prices still strong, precious metal miner Hochschild Mining is in demand.FTSE 250 - RisersWeir Group (WEIR) 1,070.00p +12.57%Senior (SNR) 128.70p +5.58%Cookson Group (CKSN) 463.50p +5.48%Morgan Crucible (MGCR) 191.00p +5.29%Eaga (EAGA) 116.50p +4.39%HMV Group (HMV) 57.30p +4.28%Charter International (CHTR) 715.00p +3.92%Hochschild Mining (HOC) 322.20p +3.87%IMI (IMI) 696.50p +3.65%Pennon Group (PNN) 558.00p +3.53%FTSE 250 - FallersDS Smith (SMDS) 114.80p -2.96%Unite Group (UTG) 174.00p -2.03%WH Smith (SMWH) 432.40p -2.02%Grainger (GRI) 108.80p -1.89%Davis Service Group (DVSG) 365.90p -1.61%Victrex (VCT) 1,131.00p -1.57%Logica (LOG) 121.00p -1.55%Premier Foods (PFD) 20.39p -1.50%Fidessa (FDSA) 1,327.00p -1.48%F&C Commercial Property Trust (FCPT) 92.35p -1.39%