Open-pit mining system mining is greatly influenced by surface runoff, rainwater and groundwater. This surface water runoff is highly dependent on rainfall catchment areas, climate, and land use. Handling surface water runoff entering the mining area by creating water channels in the form of open channels and closed channels. One of the mining methods that is generally carried out in Indonesia is the open-pit mining method, which is widely found in East Kalimantan. Large basins will be created as a result of this mining technique, which could eventually serve as a reservoir for water from both surface runoff and groundwater. Therefore, an analysis of the runoff water output in the sump is required, sump capacity and appropriate pumping ratio so that mining activities can continue. The results of the study obtained the runoff discharge value in the sump was 4,071.37 m3/day, the sump capacity was 207,474.07 m3, the water balance in the sump with a total runoff discharge of 5,871.37 m3/day, and the existing volume of water in the sump was 24,771 m3. evaporation of 4.36 m3/day, infiltration of 91.36 m3/day, and pump discharge of 8,229.27 m3/day. A pumping ratio of 0.71 was obtained.

Drilling is an essential operation in mining activities, particularly in borehole preparation for blasting purposes. The efficiency of blasting hole preparation depends significantly on the drilling speed to penetrate the rock formations.Drilling Rate Index (DRI) measures the ease or difficulty of drilling through rock formations. It combines two tests: Brittleness (S20) and SJ value. DRI serves as a common metric to predict drilling capabilities and is classified according to a table classification of drilling rate index.The classification of DRI values for sandstone and mudstone of Balikpapan Formation at PT. RCI Job Site ABK indicates a very high classification with DRI values ranging from 66 to 86. Testing results for samples SBP1 (DRI 75.9), SBP2 (DRI 81.7), SBL1 (DRI 66.6), and SBL2 (DRI 71.1) all fall within the very high classification range.
 
 

Panti Asuhan Aisyiyah Putri merupakan sebuah lembaga  kesejahteraan sosial anak (LKSA) yang keberadaannya berlokasi di Jl. Srikandi V No. 61, kota Semarang. Panti asuhan melakukan pengasuhan kepada anak asuh yang jumlahnya cukup banyak. Dimana dalam keseharian anak asuh yang ada pada panti asuhan ini juga seringkali mengakses berbagai informasi secara digital. Informasi digital tidak semua yang tersedia dalam berbagai media seringkali tidak selalu memberikan sajian yang benar. Untuk menghindari kesalahan dalam mengakses informasi yang salah perlu adanya pelatihan literasi digital. Luaran pelatihan literasi digital ini adalah memberikan wawasan tentang informasi digital yang harus diakses secara bijak. Saat mendapatkan informasi maka perlu dilakukan penyaringan sebelum informasi tersebut bisa dibagi. Pelatihan dilakukan dengan mengadakan pertemuan secara langsung dengan anak asuh yang di LKSA Aisyiyah Putri Kota Semarang. Dalam pelatihan peserta diberikan wawasan tentang informasi dan bagaimana memvalidasi informasi tersebut dan diberikan pula contoh-contoh penyalahgunaan informasi yang ada pada dunia digital.