Royal Dutch Shell PLC will this month be grilled by Dutch lawmakers for the first time over its operations in the Niger Delta, reflecting growing concern in the West about oil spills in west Africa...Socialist Party lawmaker Sharon Gesthuizen said the debate would be more about fact-finding than apportioning blame. "We don't believe [the problems in the Niger Delta] are all Shell's fault," she said in an interview. "But they've been going on for so long now, and we need to know why...Shell says it isn't responsible for the oil spills, blaming sabotage and oil theft.