386 Kewajiban Perusahaan Pertambangan Dalam Reklamasi Lahan Tambang Menurut Undang-Undang Nomor 3 Tahun 2020 Tentang Pertambangan Mineral Dan Batubara Diaz Rahadiyan Rizkirobbi [1] , Nurul Listiyani [2] , Iwan Riswandie [3] Fakultas Hukum, Program Studi Hukum Universitas Islam Kalimantan Muhammad Arsyad Al Banjari Jl. Adhyaksa No.2, Sungai Miai, Kec. Banjarmasin Utara, Kota Banjarmasin, Kalimantan Selatan 70123 Email: diaz.rahadiyan96@gmail.com [1] nurullistiyani5@gmail.com [2] iwanriswandie2@gmail.com [3] Jurnal Penegakan Hukum Indonesia (JPHI) JPHI E-ISSN 2746-7406 JPHI P-ISSN 2808-4896 Submitted : 23/01/2023 Revised : 27/04/2023 Accepted : 28/04/2023 Published : 05/05/2023 Editorial Office: Jl. Brigjen H. Hasan Basri Komplek Polsek Banjarmasin Utara Jalur 3, No. 9 Kota Banjarmasin; Provinsi Kalimantan Selatan; Republik Indonesia (70125). Email jphi.scholarcenter@gmail.com Principal Contact +62 812 5681 2202 © 2021 by the authors. Submitted for open access publication in Jurnal Penegakan Hukum Indonesia (JPHI) under the terms and conditions of the Creative Commons Attribution NonCommercial-ShareAlike 4.0 license (CC BY NC SA Abstract Aside from the rise of environmental issues regarding mining activities, especially in the context of reclamation and post-mining activities, there have been changes in the regulations governing them. The reclamation program for ex-mining land is a mandatory program that must be carried out by every company, both private and non-private. Reclamation is an activity carried out throughout the mining business stages to organize, restore, and improve the quality of the environment and the ecosystem so that they function again according to their designation. The placement of post-mining guarantees by companies should not eliminate the company's obligation to carry out post-mining activities. If the company has a shortage of reclamation planning costs, placement of reclamation guarantees, implementation of reclamation, or release or disbursement of reclamation guarantees to complete post-mining activities under the stipulated guarantee, it remains the company's responsibility. Keywords: mining; mining company obligations; reclamation; and post-mining activities. Abstrak Berangkat dari maraknya isu-isu lingkungan atas kegiatan pertambangan terutama dalam rangka reklamasi dan kegiatan pascatambang terjadinya perubahan-perubahan aturan yang mengaturnya. Program reklamasi lahan bekas tambang merupakan program wajib yang harus dilakukan oleh setiap perusahaan baik