How to set up a wealfare system

 The number of gold mines needed to create a welfare system is a complex question, as it depends on various factors such as:

1. *Gold production*: The amount of gold produced by each mine.

2. *Gold price*: The market value of gold.

3. *Operating costs*: The expenses associated with running a gold mine.

4. *Welfare system scope*: The size and complexity of the welfare system.

5. *Government revenue allocation*: How much revenue from gold mining is allocated to welfare programs.

That being said, let's consider a hypothetical scenario:

Assuming an average gold mine produces around 1-2 tons of gold per year (approximately $40-80 million at current gold prices), and operating costs are around 50-60% of revenue.

To create a substantial welfare system, let's assume we need an annual budget of $1-5 billion.

Based on these rough estimates, here are some possible scenarios:

- *Small-scale welfare system*: 10-20 gold mines (each producing 1-2 tons of gold per year) could generate around $400-1.6 billion in annual revenue, potentially supporting a small-scale welfare system.

- *Medium-scale welfare system*: 50-100 gold mines could generate around $2-6 billion in annual revenue, potentially supporting a medium-scale welfare system.

- *Large-scale welfare system*: 200-500 gold mines could generate around $8-20 billion in annual revenue, potentially supporting a large-scale welfare system.

Please note that these estimates are highly speculative and don't take into account various factors like government regulations, environmental concerns, and social responsibilities associated with gold mining.

In reality, creating a welfare system requires a multifaceted approach, involving various revenue streams, policy decisions, and stakeholders. Gold mining can be one potential contributor, but it's essential to consider the broader economic, social, and environmental context.