Published: August 11, 2025 |

[Click image to enlarge]

Dateline Resources Limited has appointed Simon Slesarewich as chief operating officer to lead development of U.S. gold and rare earths project, Colosseum Project. The appointment is effective August 4, 2025.

“We are thrilled to have Simon join Dateline as our chief operating officer at this pivotal stage for the company,” said Stephen Baghdadi, managing director of Dateline Resources.

“Simon’s decision to come on board, and his significant personal shareholding in Dateline, is a strong vote of confidence in the Colosseum Project and our vision. He brings a wealth of operational experience and a proven track record in taking projects from study through to production. We are confident that his leadership will be instrumental in successfully delivering the Colosseum Gold & REE Project into production and driving significant growth for Dateline,” added Baghdadi.

Simon Slesarewich brings more than 25 years of international experience in project development, operations, and executive leadership across a range of commodities including gold, base metals, industrial minerals, and bulk commodities. In his new role, he will lead the development of Dateline’s 100 percent owned Colosseum Gold and Rare Earth Elements (REE) Project, located in California.

Slesarewich joins Dateline from Thiess, the world’s largest mining services provider with more than 12,000 employees globally, where he served in senior executive roles including operations director and project director. At Thiess, he managed mining contracts generating significant annual revenues and played a key role in the deployment of cutting-edge mining technologies.

His career highlights include:

• Large-Scale Operations Management: In his role as operations director, he managed two full-service mining contracts with significant annual revenues and more than 1,200 personnel under management.

• Commercial Strategy & Integration: Slesarewich also led the sale of Boardwalk Resources to Whitehaven Coal as part of a $5.2 billion transaction. Other roles have included head of Integration, where he developed and executed a strategy that achieved cost synergies beyond the acquisition model and unified key business systems across finance, assets, IT, and people. This demonstrates his strong commercial acumen and ability to align large organizations to strategic objectives.

• Mine Development - Middlemount Coal: Earlier in his career, as general manager, operations of the Middlemount Coal Mine (Queensland), Slesarewich transformed an undeveloped concept into a fully operational mining operation. He successfully led the greenfield development of Middlemount, a 4.2 Mtpa coking coal mine, overseeing approximately A$500 million in capital construction and a A$400 million annual operating budget, with a workforce of over 800 staff. Under his leadership, Middlemount was developed on time and on budget, and was noted for its significantly lower capital intensity compared to peer projects.

“I am extremely excited to be joining Dateline Resources. As an investor in the company, I firmly believe in the potential of the Colosseum Gold and Rare Earths Project and its strategic importance,” said Simon Slesarewich.

“I look forward to working closely with Stephen and the team to advance Colosseum through the feasibility study and into construction and production. Together, we will be focused on executing the project effectively and creating significant value for all Dateline shareholders as we move toward production,” added Slesarewich.

Dateline Resources Limited is an Australian company focused on mining and exploration in North America. The company owns 100 percent of the Colosseum Gold-REE Project in California. The Colosseum Gold Mine is located in the Walker Lane Trend in East San Bernardino County, California.

Be in-the-know when you’re on-the-go!

CLICK HERE to register your email address.

Copyright © 2025 Mining Connection LLC. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed without permission.

For licensing permission, .(JavaScript must be enabled to view this email address)