Pyrotechnics and military counter-measures specialist Chemring surged on Tuesday after announcing two new orders, one big and one small. Its Chemring Countermeasures subsidiary has been awarded a five-year agreement with the UK Ministry of Defence, worth an initial £21m, while in the US, its Non-Intrusive Inspection Technology (NITEK) division has been awarded a contract for the ground penetrating radar, Husky mounted detection system. The contract ceiling is $579m with an initial order of $161m. ?? Shares in energy and mineral extraction industries services provider Cape advanced after the firm announced that underlying revenues increased by one-tenth in the first quarter. ??Oil and gas engineering firm Lamprell was another strong riser after saying it had secured a $227m contract from an unnamed drilling contractor to build one of its popular jackup rigs. Meanwhile, wireless technology and computer chip company CSR saw shares tumble after admitting its first quarter pre-tax losses widened to $16.5m from $2.9m previously. IFRS operating loss increased to $15.8m for the 13 weeks to March 30th 2012 from a loss of $3.3m a year earlier due to $14.5m litigation income recorded in the first quarter of 2011. FTSE 250 - RisersChemring Group (CHG) 384.00p +17.61%Cape (CIU) 408.20p +8.16%Brown (N.) Group (BWNG) 241.00p +5.15%Lamprell (LAM) 360.80p +3.68%Booker Group (BOK) 80.90p +2.41%easyJet (EZJ) 507.00p +2.24%Bumi (BUMI) 530.00p +2.22%Balfour Beatty (BBY) 266.50p +2.11%Shanks Group (SKS) 94.25p +1.89%Kenmare Resources (KMR) 51.45p +1.88%FTSE 250 - FallersCSR (CSR) 218.10p -5.46%Home Retail Group (HOME) 100.90p -5.35%Supergroup (SGP) 330.00p -5.12%Imagination Technologies Group (IMG) 661.50p -3.78%Rank Group (RNK) 114.00p -2.56%Hochschild Mining (HOC) 489.70p -2.45%BBA Aviation (BBA) 192.80p -2.38%Anglo Pacific Group (APF) 312.60p -2.31%Centamin (DI) (CEY) 67.05p -2.26%Gem Diamonds Ltd. (DI) (GEMD) 253.70p -2.05%NR