العمل حفريات لعمل خطوط انابيب بترول وتفتتيت تربه صخريه قاسيه ونغب استخدام سوائل كيميائيه لان الحفر لاتستطيع تفتتيت الصخور We are excavating oil pipe line trench we are faced with very hard rocks. Conventional excavation equipment are ineffective due to the extreme hardness of the rock formation, Subsequently we are looking for work Forman to handle chemical liquid for fragmentation of rocks.