It then asked the school headmistress to show it where the underground sewage disposal and drinking water pipes were located and used high-precision equipment to try to detect the presence of metals.
بعدها، استخدمت المجموعة جهازا دقيقا لكشف المعادن وطلبت حفر شقين وتم مسح الشقين بشكل دقيق.