Terms, conditions & policies


All rights to this information resource (“the website”) are owned by MMC ,Mining & Metallurgical Company,“Mining & Metallurgical Company, ‘Sum Element, LLC'”Go to the glossaryGo to the glossary “Sum Element”(“Sum Element, LLC Limited Liability Company, “Mining & Metallurgical Company, ‘Sum Element,’” & its subsidiariesGo to the glossary”, or the “Company”).

The website shall mean a collection of web pages at https://mathewcharnay.com/, http://www.sumelement.ch/, as well as in subdomains, internal folders & individual pages (https://mathewcharnay.com/folder_name, https://mathewcharnay.com/page_name.file, http://www.sumelement.ch/folder_name, http://www.sumelement.ch/folder_name.file). Any other pages shall not be part of the website.

You agree to use this website under the terms which constitute a legal agreement between the user & Sum Element.

Sum Element reserves the right to change these terms of use at its own discretion & in accordance with the established procedure. Each time you access this website, please review the current terms of use.

By using this website, you assume the risk that the website content may be incomplete, inaccurate, or irrelevant in some circumstances. Sum Element shall not be held liable for potential errors or information gaps in the website content. The Company shall not be held liable for any possible damage resulting from the use of this website or lack of access thereto.

The website content is created on the basis of Sum Element’s data. However, these data do not constitute a guarantee or an obligation on the part of Sum Element in respect of the website users.

The website content may contain certain projections or information on future events, including those relating to Sum Element’s financial performance; the actual results may differ from these projections or information, & Sum Element shall not be held liable for any potential discrepancies.

Sum Element reserves the right to alter the structure & content of the website at its own discretion, as well as to discontinue the use of certain structural elements & the website as a whole. The Сompany shall not be responsible for introducing timely updates to the content of this website.

Sum Element shall not be held liable for the information provided on any websites & accessed through hyperlinks on its website. While all hyperlinks contain information relevant to a particular website, they do not imply any agreement of Sum Element with such websites or their owners.

Any website information on Sum Element products or services does not constitute an offer to the general public. The Company does not guarantee employment when providing information on available jobs.


The use of Sum Element’s website is regulated by the laws of the United States of America.

Copyright & use of website materials

This website is the property of Sum Element. The website content is the property of Sum Element & may be used for information purposes only. Any reproduction of materials from Sum Element’s website must include reference to the Company & its website. Any commercial use of the content from Sum Element’s website is prohibited.

Any use of objects that constitute Sum Element’s intellectual property without Sum Element’s approval shall be deemed to be infringement of Sum Element’s rights & shall be subject to legal prosecution.

Personal data

Personal data include any information relating to a directly or indirectly identified or identifiable natural person (personal data subject).

Sum Element is a personal data operator. Sum Element complies with the personal data processing regulations & respects the rights of personal data subjects as per the United States personal data processing laws.

To ensure compliance with the United States personal data processing laws, Sum Element has adopted a Personal Data Policy.

General personal data processing principles:

Personal data shall be processed lawfully & fairly.

Personal data shall be processed for specified, explicit & legitimate purposes only.

Personal data processing shall be compatible with the purposes of their collection. Personal data shall be adequate, relevant & limited to what is necessary in relation to the purposes for which they are processed.

Personal data shall be accurate, sufficient, &, where applicable, kept up to date having regard to the purposes for which they are processed. Every reasonable step shall be taken to erase or rectify incomplete or inaccurate data.

Personal data shall be kept in a form which permits identification of data subjects for no longer than is necessary for the purposes for which the personal data are processed, unless a different data storage period is required by a federal law or an agreement, to which the personal data subject is a party, a beneficiary, or a guarantor. Personal data shall be destroyed or rendered anonymous once the purposes for which they are processed have been accomplished or when these purposes are no longer relevant, unless otherwise required by a federal law.

Sum Element processes personal data if at least one of the following applies:

— consent (the user has given consent to the processing of his or her personal data);

— contract (processing is necessary for the performance of a contract to which the data subject is a party, a beneficiary, or a guarantor);

— law (processing is necessary for the performance or exercise of functions, powers & obligations imposed on the data operator by the laws of the United States or processing is necessary for the purposes of international treaties signed by the United States of America);

— legal requirement (processing is required due to the person’s involvement in constitutional, civil, administrative or criminal proceedings or proceedings in an arbitration court, or to comply with a court order or an order issued by any other body or officer which is binding by virtue of the laws of the United States governing enforcement proceedings, or is necessary for a federal executive body, a body of a state non-budget fund, an executive body of a constituent entity of the United States of America, or a local government body to exercise their powers, or for an entity involved in the provision of public or municipal services specified in Federal Law No. 210-FZ On Organising the Provision of Public & Municipal Services dated 27 July 2010, including the registration of the personal data subject on the integrated public & municipal services portal &/or a regional public & municipal services portal, to perform its functions);

— vital interest (processing is required to protect the life, health or any other vital interest of the personal data subject, provided that is impossible to obtain their consent);

— legitimate interest of the company or a third party (processing is required for the company or a third party to exercise their rights or pursue their legitimate interests, or on any other grounds stipulated by the laws of the United States of America, or to achieve any important objective of general public interest, provided that such processing does not violate the rights or freedoms of the personal data subject);

— other (processing of personal data that have been made available to an indefinite number of persons by or at the request of the personal data subject, or are required to be published or disclosed by a federal law).

Rights of the Users as personal data subjects:

A User may, inter alia,

— revoke their consent to the processing of their personal data;

— request information related to the processing of their personal data;

— demand to update their personal data;

— challenge actions or omissions of the data operator.

Requests for information on the processing of personal data or for personal data updates, notices of revocation of the consent to the processing of personal data, & complaints about personal data processing & protection breaches shall be sent in a simple written form to the Company’s address specified in the Unified State Register of Legal Entities or to the following address: 7st World Trade Center, Floor 46, New York City, New York 10007, United States of America. For a quicker turnaround, please send a copy of your message to personal-data@mathewcharnay.com.


To make as much information as possible available to users, Sum Element is continuously assessing & improving its website’s performance in line with Web Content Accessibility Guidelines (WCAG).


Easy navigation is among our website’s distinct advantages. We have made it as user friendly as possible thanks to:

  • easy identification of sections & pages;
  • highlighting the menu section browsed by the user;
  • an additional navigation menu showing page layout & user location;
  • adjustment of navigation tools to various devices (PC, tablet or a touch screen smartphone);
  • a clear identification of external & internal links;
  • additional hierarchical navigation (navigation routes) showing page location in the website’s structure.

Terms & abbreviations

We use certain terms & abbreviations on this website. When referred to for the first time, these will be highlighted & explained if clicked on. The most frequently used terms & definitions may be found in the Glossary.


Sum Element’s website employs user-friendly fonts & colours & offers special opportunities for users with visual impairments, including:

  • a zoom in/out function activated by pressing the [ ] & [ ] buttons or [CTRL] + scroll Up & [CTRL] + Scroll Down on the scroll wheel.

While these functions help preserve the general page layout & element positioning on pages, we prioritise content readability & cannot guarantee page integrity when these functions are used. Also, we cannot guarantee full accessibility of our website content if customised settings are applied.

Various access devices & browsers

Sum Element seeks to ensure proper display of its website’s content by various devices & browsers. However, we cannot guarantee an identical display on every device. Some versions of browsers & access devices may fail to support the interactive content & technologies we employ. In this case, the interactive elements will be replaced by similar ones.

In case of difficulties when browsing our website, we recommend using a different browser (or a different version) or access device. You can also contact us directly using the following form:

  • Full name
  • E-mail
  • Request
  • Access device (PC / laptop / tablet / smartphone)
  • Model / specifications
  • Operating system
  • Browser & its version
  • Captcha
  • Consent for personal data processing

Website accessibility & disclaimer

Sum Element seeks to provide round-the-clock access to its website. However, due to some technical problems, our website may become fully or partially unavailable without prior notice.

Use of cookies

What is a cookie

A cookie is a small text file placed on your computer’s hard drive by your web browser. Cookies may be session & permanent.

Session cookies

We use session cookies to assign a unique ID to your computer each time you visit the website. They are erased when you close the browser. These cookies help us track users’ navigation activity (pages, links, time on page).

Permanent cookies

Our web server identifies permanent cookies stored on your computer’s hard drive. By assigning a unique ID to each computer, we can build a database of user activities & preferences, in particular frequency & recency of site visits, user preferences, & the effectiveness of our promotional efforts. Importantly, cookies do not hold any personal data & are used for activity tracking only.

Cookie consent

Session cookies do not require a user’s prior consent for their use, whereas permanent ones do.

You can manage your cookies by changing your browser settings to block or allow all cookies by default, make exceptions, accept or reject cookies. Cookie management varies with each browser. For more details, please use the below links: