EXPLOSIVES and chemicals supplier Orica says it can expand without building as many plants as it's done in the past. Chief executive Ian Smith told ABC Television's Inside Business program Orica had boosted its cash flow by adopting a "capital light strategy." Mr Smith says Orica will be expanding, but it won't need to build as many plants as has taken place previously. He says Orica has external sources of supply. Mr Smith says a lot of capital had been invested into converting gas through ammonia to ammonium nitrate which is Orica's main source of explosives.