i) The primary responsibility to convoke the Porgera Development Forum was held by the **Enga Provincial Government** and **the National Government of Papua New Guinea**. They organized the forum to facilitate discussions regarding the re-opening of the Porgera Gold Mine.
ii) The individuals eligible to attend the development forum in Porgera included the following:
1. **Landowners** - Those who have direct ownership and rights over the land surrounding the mine.
2. **Local Community Representatives** - Individuals representing the views and interests of the local communities affected by the mine operations.
3. **Government Officials** - Representatives from both provincial and national government bodies involved in mining and development.
4. **Business Stakeholders** - Local business owners and enterprises that could benefit from the mine's operations.
5. **Industry Experts** - Professionals with experience in mining, environmental issues, and economic development who could provide insights and advice.
6. **Non-Governmental Organizations (NGOs)** - Representatives from NGOs that focus on community development, environmental protection, and social justice.
These participants were vital for discussing concerns, expectations, and potential impacts of the gold mine's operations on the local community and environment.