Hello, ladies and gentlemen. Thank you for standing by. Welcome to the Andean Precious Metals 2nd Quarter 2021 Earnings Call. At this time, all participants are in listen only mode. Following the presentation, we will hold a brief question and answer session.
For analysts and institutional investors, I would like to remind everyone that this conference call is being recorded. Today's presenter is Luis da Silva, Andean's President and Chief Executive Officer. Joining Luis for the Q and A portion of the call is Jeff Chan, Chief Financial Officer and Simon Griffiths, Chief Operating Officer. Please note that comments made on today's call contain forward looking information and this information by its nature is subject to risks and uncertainties. Actual results may differ materially from the views expressed today.
For further information on these risks and uncertainties, please consult the company's relevant filings on SEDAR. These documents are also available on Andean's website at andeanpm.com. And now, I'll pass the call over to Luis De Silva. Luis?
Thank you, Ariel. Good morning, everyone, and welcome to Andean Precious Metals' inaugural earnings call to discuss our Q2 2021 results. We are committed to open and honest communications with our investors and look forward to keeping you apprised of our results with these calls each quarter. We appreciate you taking the time to join us today. Before I discuss our performance for the quarter, as this is our 1st earnings call, I'd like to start by providing a brief overview on who we are and what makes us different.
It is rare for a newly listed mining company to have steady production and a strong balance sheet, but that is the position that we find ourselves in and the In Precious Metals is an established and profitable company that is cash flow positive. We wholly own and operate the Sanbat Solome processing facility in Potosi, Bolivia, been in continuous production since 2008. The Sambatoreme oxide plant processes in excess of 5,000 tons per day and was built by Core Mining and sold to the predecessor company of Andean Precious Metals in 2018. We control mining rights at several locations in Bolivia and all within close proximity to the Sanbatolome facility. All source is for the Sanbatolome facility is done so in a number of ways.
Surface mining, which is a conventional mining operation using excavators and trucks. Mine waste reclamation, which our 1st stockpile of historical mine waste, where essentially we are cleaning up and have a positive environmental benefit. And thirdly, pardon me, 3rd party ore sourcing, where we purchase mill feed from neighboring miners that we run through our mill. These deposits are mined by 3rd parties and then trucked to and processed at the Sanbatolome facility. Not only does this third party ore provide us with higher grades allowing for an elevated head grade to be processed in the plant, but it also provides us with an established revenue stream that helps community mining.
Ore sourcing also allows us to disperse G and A costs and lower our all in sustaining cash costs. We also have the ability to expand the ore sorting business by signing new contracts, and we're constantly evaluating new opportunities. Just for context, we are currently purchasing ore from 32 out of approximately 1700 minuteing cooperatives within Bolivia. All of this ore sourced is higher grade from the 3 deposits we are actively mining. We are in the early stages of a 5 year mine plan of 3 deposits in the Sahelvikal mining region, one of the world's largest silver deposits and an area that has been mined since the late 1500s.
The ore from this 5 year mine plan accounts for approximately 60% of our mill feed. And the mining method is rather simple since these are shallow alluvial deposits with no drilling or blasting. In addition to our production profile and our sourcing business, we also have an active exploration program for 2 highly prospective properties that we own, Rio Blanco and San Pablo. In July, we began a diamond drilling campaign at Rio Blanco comprising of 22 holes over 5,500 meters with 3 drill rigs. We also advanced reconnaissance geological work, including trenching totaling 1500 meters, replicating the historic work performed back in 1998.
This work program is intended to supplement the drilling campaign. And in early 2021, back in May, we completed the first phase of 12 holes totaling 3,580 meters at varying depths at San Pablo. These holes constitute the first phase of a diamond drilling program of a total of 10,000 meters dependent on the first of these results, which we expect shortly. In addition to the upside potential offered by our exploration projects, we are also contemplating high impact organic opportunities to reprocess Sanbatolomew tailings to recover silver and potentially tin. The idea would be to mine the tailings by hydraulic mining or dredging the tailings and pumping them back to the process plant.
We're doing these studies now and expect to publish our findings by the Q1 of 2022. Our management team and Board of Directors are committed to the success of this company, but success does not just come in the form of a solid production metrics and low cash costs. Success also means that our presence benefits all stakeholders, including our neighboring communities and our employees. As a company, we strive to ensure we always act in good faith and take into account the best interest of these groups as well as the environment. We do this in a number of ways, which includes building strong relationships and adding value.
We've established a set of criteria in order to manage relationships with employees, suppliers, customers and communities to create an enduring partnership. Secondly, we have dedicated resources to formulating a responsible strategy for sustainable actions. We continually assess our business model to manage key risks and identify areas of improvement. Thirdly, we intend to define ambitious new targets building on our existing operations in Bolivia. Sustainability and governance are evolving practices.
We want to ensure we have the best in class sustainability program and always have the best interest for our stakeholders and our operating jurisdiction in mind. And finally, we must adopt global industry best practices where they can directly influence our business. We understand that when we make a commitment to sustainable mining, we're also making a commitment to the resources that are required. This means we will commit to hiring experienced professionals and investing in the requisite training and supporting external research to continually strive for industry best practice. Our tailings management is also an example of how we apply sustainability best practices in action.
Our tailings are a mix of wet tailings, which as I mentioned earlier, represents a potential high impact organic opportunity as well as dry stack tailings from the main processing circuit. Dry stack tailings is 1, if not the most environmentally sustainable method used to store shulker tailings. The tailings facility was designed by Saul Daniels and is inspected today by Knight Pizzo, both of which are world leaders in tailings management. Our commitment to corporate social responsibility and our multifaceted business model is underpinned by solid financial results. Let me now take you through our 2nd quarter results.
Revenues for the quarter were US38 $1,000,000 compared to US12.6 million dollars in the Q2 of 2020. Revenue growth was attributable to an increase in silver equivalent sales volumes and higher realized silver prices of $26.71 per ounce compared with $17 per ounce of silver for the Q2 of 2020. Adjusted EBITDA was $10,300,000 compared to $2,200,000 for the same period last year. We generated free cash flow of $10,300,000 and ended the quarter with cash and cash equivalents of $79,000,000 Cost of sales including royalty expenses linked to commodity prices were $24,400,000 compared to $7,600,000 for the equivalent period last year, corresponding to the increase in metal sales. As a result, income from the mine operations increased to $11,300,000 from $3,000,000 for the same period.
General and administrative costs increased to $2,200,000 compared to $1,200,000 in the Q2 of 2020. The increase was mainly due to costs associated with becoming a publicly traded company. Overall, the net income for the quarter was $3,900,000 compared to a net loss of $250,000 for last year. Our equivalent production and sales remained consistent during the quarter. And in the first half of twenty twenty one, we produced 2,900,000 ounces at an all in sustaining cash cost of $18.15 per ounce.
We remain on track to meet our production and cost guidance for 2021. As we head into the second half of twenty twenty one, we will focus production on the Santa Rita Payajos area. At our high grade mine waste stockpile areas, mine production will continue at El Acienta area through August 2021. As of July 2021, we have also began mining at our Montserrat Mining Waste Stockpile area, which is expected to contain higher grade material than the Pernacles area. We'll also continue to expand our 3rd party ore sourcing business from locations outside of Cerro Rico.
San Bartolome is the only large scale commercial oxide plant in Libya, which provides us with a distinct advantage. We can leverage our oxide processing capability and our strong working capital position to actively review additional purchasing opportunities throughout Bolivia. Thank you for your time today. I will now open the line up for questions.
Thank you. We will begin the question and answer I would like to turn the conference back over to Mr. D'Silva for any closing remarks.
Thank you, Ariel, and thank you everyone for participating. Please feel free to reach out to our Investor Relations team at irandeanpn.com if you have any further questions. Thank you very much.
Ladies and gentlemen, this concludes today's conference call. Thank you for participating. Please disconnect your lines.