Authorities have launched an investigation into WHA ESIE 5 industrial estate in Rayong after discovering evidence of unauthorized rock blasting during land preparation work on August 13. The Ministry of Industry has ordered all blasting work suspended immediately, demanded the developer provide factual clarification within 3 days, and pledged strict legal enforcement if violations are confirmed. This affects one of Thailand's key EEC development zones and raises compliance questions for major industrial tenants like Haier Smart Home.