أن يكون عمق الحفر 1,5 متر من مستوى

أن يكون عمق الحفر 1,5 متر من مستوى الأرض الطبيعية أو 4 متر من مستوى قضبان السكة الحديدية أيهما أكبر

Results (English) 1:

The drilling depth is 1.5 m from the ground level or 4 meters of railway rails level, whichever is greater

Results (English) 2:

Be a drilling depth of 1.5 m from the natural ground level or the level of 4 meters of rail iron rods, whichever is greater

Results (English) 3:

A drilling depth of 1,5 m from the ground level of 4 meters from the railway rails, whichever is greater.