[ABSTRAK
Di Indonesia, peraturan perundang-undangan dalam bidang pertambangan mineraldan batu bara diawali dengan diberlakukannya Undang-undang 11 tahun 1967tentang Ketentuan Pokok Pertambangan dengan peraturan pelaksananya yangkemudian telah diubah seluruhnya dengan diberlakukannya Undang-undang No40 tahun 2009 tentang Mineral dan Batubara (?UU Minerba?) beserta denganperaturan pelaksananya sebagai hukum positif dalam melaksanakan kegiatanpertambangan dewasa ini. Dengan adanya suatu peralihan dasar hukum dalammelaksanakan kegiatan pertambangan, kemudian muncullah beberapapermasalahan yang terjadi antara lain mengenai permasalahan bagaimanakedudukan hukum PKP2B setelah diberlakukannya UU Minerba, dan bagaimanakeberlakuan UU Minerba tersebut mempengaruhi hubungan kontraktualpemegang PKP2B dengan pihak ketiganya yang mayoritas merupakan pihakinvestor asing.Dengan menggunakan metode analisis normative untuk menganalisa danmenjawab identifikasi masalah dalam penulisan hukum ini kemudian akandipaparkan, dan dianalisa secara rinci bahwa UU Minerba pada dasarnya tetapmengakui keberlakuan PKP2B dengan memberikan kewajiban terkait denganmasa peralihan untuk melakukan penyesuaian terhadap seluruh ketentuan didalam PKP2B maupun isi dan ketentuan kontraktual pemegang PKP2B dan pihakketiganya yang ingin tetap melakukan kegiatan pertambangan di Indonesia.

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ABSTRACT
In Indonesia, the legislation in the field of mineral and coal mining began with theenactment of Law 11 of 1967 concerning the Basic Provisions of Mining and itsimplementing regulations, which was changed entirely with the enactment of LawNo. 40 of 2009 on Mineral and Coal Mining ("Mining Law") and itsimplementing regulations as the positive law in carrying out mining activities.With the change of regulation in conducting mining activities, some problemsoccurred relating to the validity of PKP2B after the enactment of the Mining Lawand how the enactment of the Mining Law affects the CCOW holder?s contractualrelationship with third parties, the majority of which are foreign investors. Byusing the normative methodology to analyze and answer the issue in this Thesis, itshall be explained and analyzed in details that the Mining Law still recognizes thevalidity of CCOW by providing the obligation during the transitional period tomake adjustments to all the provisions in the CCOW including the contents andcontractual provisions of CCOW holders and third parties who want to keepcarrying out mining activities in Indonesia;In Indonesia, the legislation in the field of mineral and coal mining began with theenactment of Law 11 of 1967 concerning the Basic Provisions of Mining and itsimplementing regulations, which was changed entirely with the enactment of LawNo. 40 of 2009 on Mineral and Coal Mining ("Mining Law") and itsimplementing regulations as the positive law in carrying out mining activities.With the change of regulation in conducting mining activities, some problemsoccurred relating to the validity of PKP2B after the enactment of the Mining Lawand how the enactment of the Mining Law affects the CCOW holder’s contractualrelationship with third parties, the majority of which are foreign investors. Byusing the normative methodology to analyze and answer the issue in this Thesis, itshall be explained and analyzed in details that the Mining Law still recognizes thevalidity of CCOW by providing the obligation during the transitional period tomake adjustments to all the provisions in the CCOW including the contents andcontractual provisions of CCOW holders and third parties who want to keepcarrying out mining activities in Indonesia, In Indonesia, the legislation in the field of mineral and coal mining began with theenactment of Law 11 of 1967 concerning the Basic Provisions of Mining and itsimplementing regulations, which was changed entirely with the enactment of LawNo. 40 of 2009 on Mineral and Coal Mining ("Mining Law") and itsimplementing regulations as the positive law in carrying out mining activities.With the change of regulation in conducting mining activities, some problemsoccurred relating to the validity of PKP2B after the enactment of the Mining Lawand how the enactment of the Mining Law affects the CCOW holder’s contractualrelationship with third parties, the majority of which are foreign investors. Byusing the normative methodology to analyze and answer the issue in this Thesis, itshall be explained and analyzed in details that the Mining Law still recognizes thevalidity of CCOW by providing the obligation during the transitional period tomake adjustments to all the provisions in the CCOW including the contents andcontractual provisions of CCOW holders and third parties who want to keepcarrying out mining activities in Indonesia]