Acid Mine Drainage

Acid mine drainage is just one of the many problems of AML. Mines fill up with water and spill over into local watersheds, or water seeps through former mining sites contaminating the water. 

 

The EPA classifies AMD as being characterized by one or more of the following:

• Low pH ( high acidity)
  
• High metal concentration (usually iron, aluminum and manganese)
  
• Elevated sulfate levels 
  
• Excessive suspended solids 

Acid mine drainage can cause streams to die with no active fish, or insect life, and stunted plant growth. AMD can also lead to orangish colored water (with the iron), and sometimes even metallic (with the aluminum). 

Measures are being taken by local groups in conjunction with the EPA to clean up local watersheds. These projects are know as Abandoned Mine Drainage Abatement and Treatment plans (AMDAT). 

Raccoon Creek Watershed

"The Raccoon Creek Watershed Partnership is neat. It's a non-profit and agency partnership, but it's not an adversarial relationship it is a collaboration to improve the watershed's quality."- Ben McCament, Raccoon Watershed Coordinator. 

Raccoon Creek Watershed Partnership originally began in the 1980s with concerned citizens. In the early 90s the citizen group paired up with state agencies to take action. Since the partnership formed they have completed 10 projects from $7 million in grant funding.

The partnerships main focus is to restore the main stem of Raccoon Creek, as well as the main stem of Little Raccoon Creek. In hopes of restoring the creek the partnership divided the area into three sections, the headwaters, middle basin, and Little Raccoon Creek. Each section has multiple projects to restore the water as it enters the main stem.

Whenever beginning a new project lots of monitoring and studying takes place, and all treatment options are considered. They average 350 water samplings a year, as well as  fish monitoring and habitat monitoring, totally about  2-3 months of observation.

"We have limited resources so we want to make the best choice, which will help the stream with the most recovery," said McCament. 

The idea way to combat AMD is to fill in underground mines so water can no longer seep through them. When that isn't an option due to money and resources, there are a variety of treatments the Raccoon Creek Partnership uses. 

One the partnership treat AMD is by building steel slags. A pond will is built containing steel slag ( a byproduct of mating steel) above the source of acid mine drainage. This decreases the waters acidity before the AMD point. This will neutralize the water once the two combine before the stream runs into the creek. 

Another similar treatment is limestone ponds. The pond filled with limestone will be placed below a contaminated area and the water will flow it decreasing in acidity. The water will then flow through a second pond where clumped metals will be deposited before the stream flows again towards the main stem. 

Other treatment methods the partnership employs are wetlands- the biological activity with in then decreases the water acidity. The final treatment employed by Raccoon Creek is a doser. The doser is the only active treatment in Ohio and it involves directly adding chemicals to the water to neutralize it. 

"All streams are worth restoring and protecting. Raccoon Creek is one of the largest creeks (actually a river) with lots of resources and public land. It has a large potential for recover. The creek hasn't been completely destroyed," said McCament. 

A stream is considered restored when it meets the EPA bio criteria for water.
McCament estimates that the partnership has about a dozen more priority projects, totally at least another 20 years of work and $10 million. 

*Raccoon Creek only deals with abandoned mines, mines before 1977, mines since then have had to take care of cleaning up after themselves. 

Other Local AMDAT Projects

Federal Valley Watershed Group 
Monday Creek Restoration Project 
Sunday Creek Watershed

This is a picture of  the Cardondale Doser the only active treatment used in the state of Ohio. It's located in the headwaters of the creek. Each day it dispenses 1/2 ton of chemicals. It holds a total of about 7 tons.
Dissolved aluminum in the acidic water precipitates as a solid flocculent when the water from the mine is exposed to oxygen. This chemical reaction typically occurs when the pH is above 4.5 (Raccoon Creek Partnership description.)

The upper Oreton Valley is blocked by abandoned surface mile spoil. The AMD water then flows down into the lower wetland before entering Pierce Run. Some of the Iron is store in this wetland but the majority is flushed into Pierce Run. ( Raccoon Creek Partnership description.)

(Information from Ben McCament Raccoon Watershed Coordinator, and from the EPA site. Pictures courtesy of the Raccoon Creek Partnership.) 

A Coal Miner's Story

Stan Wires spent 25 years underground working in the darkness of coal mine. He shares what it was like to be a miner at Southern Ohio Coal Meigs Mine No. 2.  

During his 25-year employment with the mine Stan worked as a trainee, a general inside labourer, rock duster, on the retreating longwall, and as a shuttle car operator.  

Day to Day

Each day at the mine began by getting dressed in the wash house. Each miner had a helmet with light, a belt and battery pack, and a canister of W-65 , totaling about 15lbs of equipment.

Depending on where the miner was working next they'd either wait for a supervisor to tell them where to report to, or they'd go directly to their section. Before entering the mine however each miner would place a numbered tag on the wall to represent them as being inside the mine.

Men would then take the tram to their destinations, sometimes riding in a car for 45-minutes. Once at their destination the miners would sit have some coffee and then begin their day.

Then the miners would go to the face to work. Working until it was time to eat, flooding out to lunch (someone would come replace one person, and they’d eat and then replace someone else, doing the same all the way down through).

During the shift if things would break down miners would be dispersed to go and do different things, brace walls and other stuff.

Shifts ranged anywhere from 8-10 hours a day. Men would finish their day by showering in the bathhouse were they began their morning (sometimes evening depending on the shift). 

Retreating Longwall

Working on the longwall Stan would place the continuous miner down and cut about 1400ft into the wall of coal, then cut across it. Along with the other miners he'd put the shields up (hydraulic shields) start cutting the base. 

"On the long wall when cutting you only cut so far and then the top falls in. That’s why they’d call it the thunder from down under," said Stan.  

Rock Duster

As a rock duster  Stan would shoot water to pulverize limestone to keep the mine from exploding.

"That was a gassy mine.  Two hundred million cubic feet of methane come out come out in 24-hours," and Stan.    

Methane gas naturally has no smell ( smell is added when put into a home), so it can be a silent killer inside a mine.

Accidents

While working at No. 2 Stan experienced a few different accidents inside the mine.

"One time working on the east long wall, a guy got injured about ten feet from me," said Stan.  "He was never any good after that, a post hit him on the side of the head, and crippled him." 

Another time working on a long wall a man got covered up when the top fell and Stan had to dig him out. The man was lucky Stan said, just breaking his pelvis and shoulder.

Stan himself never got seriously injured, but a few times was knocked unconscious. 

A Wife's Worries 
" A coal miner wife's biggest fear is that her husband isn't coming back,"- Carolyn Wires

Carolyn Wires, Stan's wife, is the child of a second generation coal miner, and she knows just how dangerous coal mines can be.

Wires' grandfather, an immigrant from Italy, came to America in the early days of coal mining. Her grandfather worked daily with just a pick and bucket to remove coal from the seam. Ponies then carted the coal out of the mines." My grandfather lost his finger in the chains of one of the pony carts," said Carolyn.

In addition to the physical rigors or coal mining, Carolyn always heard about the silent killer, gas, through stories about the canaries down in the mine. (Canaries used to be kept in cages, and everyday if they were still alive the miners would know that the mine wasn't too gaseous to work in that day.) 

In 1975 when Stan began working at the mine Wires understood what her husband was getting into. "I knew my husband was going into a dangerous occupation, so I would stay up late at night until he came home," she said.

"Coal mining can provide a good source of income, but no one wants to stay in it forever," said Wires.

Fun No. 2 Info

No. 2 Facts

When Stan started working at No.2 it was owned by AEP Power, when he retired the mine was owned by Consol Energy. 

There were usually 175-200 men per shift, with 600 union men working for the company. The mine was a larger one that had 14 sections and 3 long walls.

Clocking in is measured from portal to portal.  How long it would take you to get in and out of the mine, would be how long you worked. " If it took 30 mins in the mine, 20 mins to get there 20 mins to get out, they pay u for 70 minutes. You come in the portal and go out the portal," said Stan. 

Every 90 days a different group of men have to practice going to the mines escapes,  similar to a fire drill, but for mining accidents. 

Following the Seam 

Depending on how close to the surface the mine went sometimes people's ponds would drain straight into the mine

New Employees

For the first 90 days on the job a new miner has to wear a green helmet with a sticker to identify him as new to the mine. This person is not allowed to be out of sight of a supervisor, operate any heavy machinery, or pick up any power cords until their 90 days were up. 

Nicknames
Inside the mine the miners went by a variety of nicknames;

• Normy
  
• Sledge Hammer
  
• Turtle
  
• Flash
  
• Goo
  
• Snork
  
• Magoo
  
• Pork
  
• Hoggy

"Nicknames were taken seriously. One guy got hurt and had to be life flighted to Columbus and on the helicopter when he was asked what his name was he said 'Too Tall,' refused to go by his real name," said Stan.  

(Information from Stan Wires and his wife Carolyn.)