Max Depth Upgrade: The Key to Rare Ores
The Max Depth upgrade is arguably the single most impactful upgrade in Tectonic Industries. It determines how deep into the mine you can venture, and deeper means rarer ores, higher values, and significantly more income. Every other upgrade in the game matters, but if you cannot reach the ores worth mining, nothing else you build matters much. Max Depth is the gateway to the real money in this game.
This guide covers every level of the Max Depth upgrade in detail, including what ores you unlock at each depth, cost-benefit analysis, and strategies for affording each upgrade as efficiently as possible.
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All Max Depth Levels
The Max Depth upgrade has 4 levels, starting at 25 meters and extending to 300 meters and beyond. Each level unlocks a new tier of the mine with progressively rarer and more valuable ores.
| Level | Depth Range | Cost Estimate | New Ore Tier | Value Multiplier vs Surface |
|---|---|---|---|---|
| 1 (Starting) | 0-25m | Free | Common | 1x (baseline) |
| 2 | 25-75m | Low-Moderate | Improved Common | 2-3x |
| 3 | 75-150m | Moderate | Uncommon | 4-7x |
| 4 | 150-300m+ | High | Rare to Epic | 8-15x |
The value multipliers shown above are approximate and represent the average value increase for ores found at each depth range. Individual ore values vary, with some rare ores at 150m+ being worth 20x or more compared to surface ores.
Level 1: Surface Mining (0-25m)
The starting depth of 25 meters gives you access to basic common ores. These ores are the least valuable in the game but are sufficient for getting your mining operation started. At this depth, you will find:
- Basic stone and mineral ores
- Low-value common deposits
- Occasional uncommon ore veins
Surface mining is your tutorial phase. Use it to learn the mining mechanics, build your first Forge and Mineral Washer, and establish a basic income flow. You should upgrade to Level 2 as soon as you can afford it, because the ore quality improvement at 25-75m is significant.
Level 2: Shallow Mining (25-75m)
The second Max Depth level extends your mining range to 75 meters. This is where mining starts to feel rewarding, with noticeably better ore values and more variety in the types of ores you encounter.
Ores at 25-75m
At this depth, you will find improved versions of common ores along with your first real uncommon deposits. These ores are worth 2-3x what you were mining at the surface, which means every mining run brings back significantly more value.
Strategy for Level 2
Once you unlock Level 2, focus your mining exclusively in the 25-75m range. Do not waste time on surface ores anymore. The better ores at this depth will help you earn the currency needed for your next upgrade faster than continuing to mine at the surface.
This is also a good time to invest in your first Backpack Size upgrade. The improved ores at 25-75m are worth carrying more of, and a larger backpack means fewer trips back to base.
Level 3: Mid-Depth Mining (75-150m)
The third Max Depth level is a major milestone that opens up the mid-depth zone from 75 to 150 meters. This is where uncommon ores become common and you start finding genuinely valuable deposits.
Ores at 75-150m
Mid-depth mining is where the income potential really starts to climb. Ores at this depth are worth 4-7x surface values, and some uncommon ore types are specifically found only at these depths. The improved ore quality means your refiner chain and forge are processing much more valuable material, which translates directly into higher income.
Strategy for Level 3
Level 3 is when your entire operation upgrades. The ores you bring back from 75-150m justify investing in B-Tier and A-Tier refiners, because the processing multipliers apply to much higher base values. A 1.5x refiner multiplier on a 50-coin surface ore adds 25 coins of value, but the same multiplier on a 300-coin mid-depth ore adds 150 coins.
Make sure your Backpack Size is at least Level 3 (400 ores) before mining extensively at this depth. The higher-value ores mean each ore is worth more, so you want to maximize how many you can carry per trip.
Level 4: Deep Mining (150-300m+)
The fourth and final Max Depth level is the endgame for mining depth, extending your range to 300 meters and beyond. At this depth, you will find the rarest and most valuable ores in the game, including epic-tier deposits that can be worth 15x or more compared to surface ores.
Ores at 150-300m+
Deep mining is the ultimate income source in Tectonic Industries. The ores found at these depths are extremely valuable, and when processed through a full S-Tier refiner chain and Nuclear Forge, they generate massive income. Some of the rarest ores in the game are only found below 200m.
Strategy for Level 4
Level 4 is expensive but absolutely worth the investment. To afford it efficiently:
- Maximize your income with the best refiner chain you can build at your current Base Pass level
- Focus exclusively on mining at 75-150m while saving for the Level 4 upgrade
- Complete all available achievements and objectives for bonus currency
- Use the code "Demo!" in game settings for a free bonus
- Consider teaming up with other players for faster resource gathering
Once you unlock Level 4, you should have a strong enough refiner chain to make deep mining extremely profitable. The combination of rare ores, powerful refiners, and the Nuclear Forge creates the highest income potential in the game.
Depth vs Ore Value Correlation
The relationship between mining depth and ore value is not linear -- it is exponential. Deeper ores are not just slightly more valuable; they are dramatically more valuable. Here is a simplified illustration:
| Depth | Average Ore Value | Relative to 25m |
|---|---|---|
| 0-25m | 10 coins | 1x |
| 25-50m | 18 coins | 1.8x |
| 50-75m | 28 coins | 2.8x |
| 75-100m | 45 coins | 4.5x |
| 100-150m | 65 coins | 6.5x |
| 150-200m | 95 coins | 9.5x |
| 200-300m | 140 coins | 14x |
| 300m+ | 200+ coins | 20x+ |
This exponential scaling is why Max Depth is the most important upgrade. Every level of depth you unlock dramatically increases the value of your mining output, and those increases are multiplied further by your refiner chain and forge.
Max Depth and Refiner Chain Synergy
The combination of deep mining and strong refiner chains creates a powerful synergy that is the core of high-income gameplay in Tectonic Industries. Here is how depth and processing work together:
| Depth | Raw Ore Value | After Refiner Chain (8x) | After Forge (1.3x) | Total Multiplier |
|---|---|---|---|---|
| 25m | 10 coins | 80 coins | 104 coins | 10.4x |
| 75m | 45 coins | 360 coins | 468 coins | 10.4x |
| 150m | 95 coins | 760 coins | 988 coins | 10.4x |
| 300m+ | 200 coins | 1,600 coins | 2,080 coins | 10.4x |
The refiner chain multiplier is the same at every depth, but because it applies to a higher base value at deeper levels, the absolute income increase is dramatically larger. This is why you should always prioritize Max Depth -- it amplifies the value of every other upgrade and machine in your base.
Frequently Asked Questions
What is the maximum mining depth in Tectonic Industries?
The Max Depth upgrade currently has 4 levels, with the final level extending your mining range to 300 meters and beyond. The exact maximum depth at Level 4 may be higher than 300m, with some players reporting ore deposits at 600m+ after all depth upgrades.
How much does the Max Depth upgrade cost?
Costs increase with each level. Level 2 is relatively affordable (low-moderate cost), Level 3 is moderately expensive, and Level 4 is the most expensive depth upgrade. The exact costs are displayed in the upgrade menu in-game.
What ores are found at maximum depth?
The deepest mining levels contain the rarest and most valuable ores in the game, including epic-tier deposits that can be worth 15-20x or more compared to surface ores. Some rare ore types are exclusively found below 200m.
Should I upgrade Max Depth before Backpack Size?
In most cases, yes. Max Depth directly increases the value of every ore you mine, while Backpack Size only affects how many ores you can carry. A smaller backpack of valuable deep ores is worth more than a large backpack of cheap surface ores. The exception is if your backpack is so small (100 ores) that you are spending more time walking than mining.
Can I mine deeper than 300m?
The Level 4 Max Depth upgrade extends your range to 300m and beyond. Some players have reported reaching depths of 600m+ with all upgrades. The mine appears to continue generating ore deposits at increasing depths, with progressively rarer ores the deeper you go.
Do I need better equipment to mine at deeper levels?
Yes, deeper levels often require better equipment. Basic pickaxes may not be effective against harder ore deposits found at depth. Upgrading your pickaxe, lights, and other equipment ensures you can mine efficiently at all depths.
Where can I find depth-specific ore maps?
The Tectonic Industries Discord server has community-created ore distribution maps and depth guides. The @seenverge YouTube channel also features deep mining tutorials and ore location guides.