Thanks Catherine. Before I get to the Q1 highlights, I just want to provide some details on the recent 28 March incident at Veladero. On that date, the integrated and remote operating center based on [indiscernible] help test to detect the rupture of a pipe in the leach pad, and asked the team down there to immediately take the necessary actions to contain the solution into the operating site, meaning there was no impact for the environment or communities or our workers. As a result of the incident however, the San Juan one authority ordered a temporary restriction on the addition of new cyanide until remediation is completed. We are continuing mining however on stacking. In response to that and with some support the team at Veladero has presented holistic and long-term plan of partnering with the government to remediate and develop the operation going forward. This is with a focus initially on the re-engineering of the leach facility, slight adjustment to our ongoing plan, together with other dimensions, which deliver affect such as community relation, integrated communication, investments and other changes on the ground. These measures for instance include the construction in certain areas of additional containment barriers beyond the existing burn at the mines heat leach pad area. On the side site, we are relocating, replacing, and upgrading piping and leach pad and in particular the process solution bearing pipes that failed are going to be rebuilt, reinforced, and moved to the centre of the leach pad and replaced with new 7 centimeter thick high-density polyethylene pipes. To this we are adding new valves to the system to better control the flow of the processing solution and we are increasing the intensity of management and supervise your resources at that point. In addition, I am doubling up on what we’ve discovered to be a successful addition, and to be just transparent as possible, we are adding new high definition cameras to monitor the leach pad and other areas of the operation remotely. New cyanide addition, we are targeting to be subject to regulatory approval in June and we will continue to update our shareholders on this matter. Now onto the first quarter operating highlights. First, and as always we talk about keeping people safe. And unfortunately on 5 February 2017 this year, we lost one for contractors Williams Credo [ph] working high up on the transfer site, leaving behind his partner Carolina and three children. A tragic event, which we regret deeply. Notwithstanding this, and in part because of this, we continue to drive forward on our efforts to keep people safe and we use as a measure of our performance, the total recordable injury frequency rate. Death this year a tolerance of 0.4 to all our operations and year-to-date we were at 0.36 and targeting 0.32. Now onto production, we produced 1.31 million ounces of gold this quarter, which is within 2.2% of our original plan at a cost of sales of $833 an ounce. The all-in sustaining cost in this first quarter was $772 an ounce, which again is slightly better than we originally planned in high CapEx quarter relative to production, and this was possible given by our focus on cash cost delivered through the best-in-class efforts. Copper production for the first quarter was 95 million pounds, now compared to the same year - same period last year, primarily due to lower production in Lumwana as a result of lower tons processed combined with lower grades. Basic, the copper in the quarter was $2.19 per pound as you can see in front of you. On to guidance. We have decreased our 2017 gold production guidance to 5.3 million to 5.6 million ounces from its previous range. A significant portion of this reduction is attributable to the anticipated sale of 50% of Veladero, as Kelvin has already outlined, which is expected to close at the end of the second quarter. This guidance also assumes the resumption of normal processing activities in the timeline I outlined before in June, a core subject to further inspections and approvals. Now on to capital, we expect sustaining capital expenditures to remain in the range of circle $1 billion to $1.2 billion with project capital expenditures on top of that to be $250 million, or $300 million respectively. As you can see in front of you, as a result we expect total capital expenditures to remain within the same range of $1.3 billion to $1.5 billion this year. And this range assumes expected savings from our improved capital management program which is constant and ongoing. Operational excellence, while given, as you have heard us say a number of times, our enduring emphasis on continually improving the plan, I remain very excited about the returns on our investment in our operational excellence area. We have been improving productivity in Nevada and have completed the unification of Cortez and Goldstrike, a goal great step change in organization. And this has helped Bill and his team expedite the implementation of our digital transformation. Just as one small example of this, we have overhauled our short interval control programs allowing us to reorganize blasting between shifts, adding up to 7 hours a week. These and multiple other efforts all add up significant changes in productivity and in cash cost improvement, and is just the start. We continue to search in a longer term for innovative ways to transform our business. We hosted hackathon back in March where we hosted under Michelle Ash’s guidance a 100 student entrepreneurs and scientists to come up with ideas for two challenges we are currently facing. One challenge sort to ways - new ways to detect, track, and optimize maintenance work at Barrick mines and the other ask teams to develop innovative tools to consolidate exploration data from multiple sources. The results were inspirational and potentially transformative on a great model for going forward. And we intend therefore to sponsor up to five of these a year as we look out with to find new ways to solve our operation and efficiency challenges. We are rolling out two remote operating centers where site activities will be monitored from as the first step. Barrick Nevada team operated by the means of an analytics to unified operating centre [indiscernible] with the capacity to get data, analyze it and use real-time information to unify our business functions to make informed and anticipate decisions that produce risk and improve our business relentlessly driving transparency, which relentlessly drives performance. The other incidentally is more advanced and I referred to it a minute ago, it is in our Argentina Centre [indiscernible]. We are delighted to be hosting a mine tool fuel in June where you can come to [indiscernible] to see this phase of digital Barrick in action. We will be hosting a two-day tour there where you will be seeing Barrick, Nevada, the gold mine, potentially our software engineering facility, Cortez, Goldstrike, and our new analytics and unified operating centre. As Kelvin outlined at the start, our fifth strategic priority is talent development, underpinning everything in fact. We couldn't achieve any of these former priorities, number 1 to 4 without having the right talent in the right places. As we have mentioned a number of times developing our greatest asset, our people is vital, and our goal is to recruit, manage, and motivate such people to exceptional standards. Taking account of new technology we are leveraging digital and social networks to fund and attract such talent with a focus on digital skills needed to transform our business over the short and long-term. And we continue to expand the strategic veterans programs to attract highly specialized and suitable individuals that have identified over 200 veterans within our company that are already making a difference. To support our talent and strategy in this strategy we develop the Barrick Learning Academy to support a streamlined learning experience for both operators, maintainers, and salaried professionals; two unique but interrelated groups across the company. Our learning delivery methods are being upgraded to include a wide range of course types from on demand to in person based on individual needs reinforced with learning categories and course topics that amount to individual level and role. Overall is to reinforce our best-in-class support for internal talent development. We’ve practiced that it will improve everything across the business over the long term. It should be no surprise to anybody listening to this call that our investments in this area in Argentina is one of the key pillars of our go forward transformative plan. I will now turn over to Bill MacNevin for his details.