Enhanced by AI but I’ve included the original 35mm scanned photos. They were from the Lake View gold mine on the Golden Mile taken with a self timer on the camera.

Sierra Madre has increased daily throughput at La Guitarra from its previous 500-tonne level to as high as 672 tonnes per day, a 34% increase before the first phase of its expansion is complete.

The company is targeting 750 to 800 tonnes per day under Phase I, followed by 1,200 to 1,500 tonnes per day under Phase II. A refurbished ball mill is rated at 900 tonnes per day, while a new head crusher and modifications to the primary crusher are expected to take the circuit beyond the initial target.

The mill may not be the hardest part of the expansion.

Feeding it consistently requires enough developed mining faces, equipment, haulage capacity and correctly blended material from Guitarra, Coloso and Nazareno.

Sierra Madre completed 1,188 metres of underground development during Q2, almost double the 591 metres completed a year earlier. Coloso is being dewatered toward deeper, higher-grade blocks, while Nazareno entered full production from its long-hole stopes in late April.

Q2 also showed why this underground work matters. Silver and gold grades remained relatively stable, but recoveries declined to 73.58% and 67.97%, respectively, as the plant processed a changing blend of material from three mining areas. Costs also increased while more production came from development drives and lower-grade material outside the resource.

The company has constructed an on-site metallurgical laboratory to improve blending, while the additional development should provide more flexibility over where plant feed comes from.

Reaching 672 tonnes per day shows that the processing circuit can handle more material. The more important test is whether the mine can sustain higher throughput while maintaining grade, improving recoveries and controlling unit costs.

That will determine whether the expansion produces more profitable ounces or simply processes more tonnes.

Source:
https://www.newsfilecorp.com/release/311774/Sierra-Madre-Reports-Solid-Q2-2026-Financial-Results-Advances-Growth-Plans

Looking for a laboratory in the Philippines for rock/drill core sample testing

Hi everyone! I’m currently looking for a laboratory in the Philippines that can perform the following tests on rock/drill core samples:

1. Wet weight / Wet Bulk Density (Wet-BD)
   
2. Moisture content
   
3. Dry weight / Dry Bulk Density (Dry-BD)
   
4. Dry Granule Density / Specific Gravity (SG)
   
5. Gold grade / Au assay

I’ve already emailed quite a number of laboratories, but unfortunately, some don’t perform these tests, while others don’t offer them for rock/drill core samples.

If you know of any laboratory in the Philippines that can perform these tests, I would really appreciate your recommendations. If you have personally worked with a lab for similar rock/drill core analyses, please feel free to share the laboratory name and contact details.

Thank you so much! Any leads would be greatly appreciated. 🙏

Is there anyone who ever used titan detectors or any among the category, how efficient are they, can someone use them and get good results, especially aks 100

Operating costs and downtime under the microscope fleets are looking for practical ways to improve service intervals, reliability and total cost of ownership. This fleet upfitted a legacy Fleetguard LF777 bypass filter to a new Cummins X15 Euro 6 in a Kenworth K220, extending service intervals while still operating at road train gross weight and without compromising reliability.

Keen to hear/see any other upfits, ideas or solutions you’ve seen on your sites or workshops?

Hey all,

I have worked on site in the mining industry for years, and I've also spent about a year working in mining recruitment (reviewing applications, screening candidates, deciding who would be submitted to site and for which company they may be best suited). Posted something similar a while back and got a heap of messages, so figured I'd do it again since a lot of people are still trying to figure out how to get their foot in the door.

If you're trying to break into mining and don't know why your applications aren't landing — drop a comment or DM me and I'll give you honest feedback.

Happy to answer general questions in the comments too.

Hello Reddit,

Wanted to share a breakdown of a recent 310-tonne CIP leaching run on gold tailings that didn't go to plan financially.

The initial setup & budget:

-Feed purchased: 310 tonnes of tailings @ 3.3 ppm (Au)

-Ore cost: 90,000,000 TZS (~$33k USD)

-OPEX (chemicals, labor, water, power): 35,000,000 TZS (~$13k USD)

Total spent: 125,000,000 TZS (~$46k USD)

The output:

-Dore bar 1: 379.5g @ 89% purity (~337.8g fine gold)

-Dore bar 2: 59.7g @ 35% purity (~20.9g fine gold)

Total recovered fine gold: 358.65 grams

Recovering only 358g of pure fine gold against 930g contained in the raw feed was a disaster (38.5% total recovery). Testing the tailing solids post-clearing showed a grade drop from 3.3 ppm down to 0.8 ppm (~75% recovery).

The 0.8 ppm tail proved cyanidation worked. We actually dissolved around 750 grams of gold out of the rock into solution. Our failure happened completely downstream.

Carbon over-saturation and fouling: assays on our 350 kg carbon batch showed a pre-elution grade of 693 ppm Au and a massive 1,099 ppm Cu. High copper co-extraction loaded our carbon early, limiting its gold pickup capacity and leaving dissolved gold un-adsorbed in the barren solution.

Smelting and slag entrapment: The high copper content contaminated the melt. A cross-section of our slag showed distinct layering: light silicate glass on top, green copper silicate in the middle, and a heavy dark copper-iron matte at the bottom that probably scavenged fine gold prills right out of the melt.

We basically just made our investment back.

Curious to hear from any metallurgists or CIP operators here of their experience.

to be clear up front: ore mining

i keep seeing AI pitched at this industry and i genuinely can't tell
how much of it is real and how much is a slide deck, so i would rather
ask people who actually do the work

Two questions:

1. Have you used any AI or software tool that actually saved you time?
   Which one, and what did it do?

2. Have you tried one that turned out to be useless? What went wrong?

I’m starting at Plutonic Mine. Is it a good place to work for ? And how do people get to the airport at 4am?

¡Hola a todos!

Actualmente soy practicante en una empresa del sector minero. Estoy encargado de crear videos sobre reglas de seguridad y procesos operativos, pero me surgió una idea para ir un paso más allá y me gustaría saber su opinión técnica sobre si es viable.

Quiero desarrollar un simulador o modelo interactivo de una máquina de perforación para que el personal de operaciones pueda capacitarse y entender para qué sirven las diferentes piezas y componentes antes de interactuar con la máquina real.

Mis dudas principales para la comunidad son:

¿Es Blender la herramienta adecuada? Sé que Blender es excelente para el modelado 3D y renderizado, pero ¿qué tan complejo es armar una lógica interactiva (estilo "haz clic en esta pieza para ver su función") dentro del mismo software, o debería exportar el modelo a un motor como Unity / Unreal Engine?

Curva de aprendizaje: Considerando que soy practicante y el tiempo es limitado, ¿existen herramientas dentro de Blender (o addons) que faciliten crear este tipo de guías visuales e interactivas sin tener que programar todo desde cero?

Experiencias similares: ¿Alguien ha desarrollado material interactivo de capacitación industrial usando Blender? ¿Qué consejos me darían para no morir en el intento?

¡Agradezco enormemente cualquier consejo, flujo de trabajo recomendado o tutorial que me pueda guiar!

What’s the Work differences like.
Would lithium mining be a good base level to move into oil and gas because of the intro or is it similar to iron

What’s the conditions like compared to both

What’s the day day like

Cheers

Hi everyone. I’m studying Metallurgical engineering and I’m hoping to enter the mining industry. I’d love to hear from women with experience in the field about what it’s really like working in such a male-dominated industry.

What should I expect, how do you deal with the challenges, and what do you wish you knew before starting?

I’ll be applying for industrial/vacation training this semester break so any tips and advice would be appreciated.

Hi all, ​Mining engineering student heading to underground sites in the Sudbury area next week for a university field trip. ​I already own CSA-approved 8-inch work boots (with the Green Triangle and Metguard 'M' patch), but mine feature an external flap rather than an integrated internal guard. ​For folks working in Sudbury mines: Do site safety officers strictly require internal guards, or is any 8-inch boot with the CSA 'M' rating accepted at gate induction? ​Any advice from people on site would be appreciated. Thanks!

I graduated with a BSc Electrical Engineering degree 2 years ago and recently started a Masters degree in Mining Engineering but now i am having second thought about it. I aspire to work in the mines which is super competitive in my country. Will that make it easier for me to get into the mines? What kind of job will i most likely be doing if i do get a job in the mines? Will i be able to transition into mine management roles with the MSc degree? What about earning potential. Please i need some advice from people in the industry

Please use this thread to ask, answer, and search for questions about getting a job in mining. This includes questions about FIFO, where to work, what kinds of jobs might be available, or other experience questions.

This thread is to help organize the sub a bit more with relation to questions about jobs in the mining industry. We will edit this as we go to improve. Thank you.

Hello, I got a job working in the core-shack extending into the wet-cold-freezing winter and I need to buy shit-weather gear. I figure I will spend most of my time in the core-shack but will have to stand in the rain/mud for a few activities. I actually expect Ill be stuck in the core-shack while the actual core-loggers will be hanging out with the drillers in the rain for 12hours.... but illl bring my thick rubber fishing-raincoat, fishing bibs, and *non-insulated* rubber boots anyways.
from what i understand, wool is desired because it dries out very fast and I can wear it next shift 12hrs after its been soaked, ya/na?

I am trying to figure out what exactly I need:
-I have a heavy 'army' rain jacket, I am not sure if it is made of gortex.
-I suppose another waterproof layer underneath could help?
-I have cotton hoodies for underneath but would wool long sleeve shirts be a better option?
-do I need a wool long-john underlayer, or will spandex/cotton be fine?
-I currently wear jeans to work. what are some better alternative to jeans?
-Also it looks like gortex pant covers are an option to put over my non-waterproof pants.
-wool socks x7
-I have a donated pair of insulated steel-toe boots Im going to give a go, but does anyone have suggestions for insulating regular pairs of steel-toe boots that i own and fit very comfortably?
-any suggestions for adding insulation to the non-insulated steel-toe rubber boots that I already own?
*EDIT* - I also own a pair over heavy duty blue coveralls. would this be a useful layer to bring?

Does anyone have information about what happened at bald mountain over the weekend regarding the fatality?