Major Tailings Dam Disasters in the Philippines - Alyansa Tigil Mina (ATM) - April 2011
Major tailings dam disasters in the Philippines Phili i
TVI PACIFIC INCApril 6 and July 11, 2007 April 6 and July 11 2007Siocon, Zambonga del Norte Heavy rains washed out the clay soil and destructed the concrete wall of the sulphide dam used for the extraction of copper and zinc.copper and zincIMPACTS: Contaminated water, where Contaminated water wherecyanide and mercury is detectable, flows to the Canatuan River down to Siocon River and towards the sea. Two days after the collapse, it has been reported that siltation has reached up that siltation has reached upto 3meters thick.
LAFAYETTE POLYMETALLIC PROJECT (LAFAYETTE MINING LTD)October 11 and 31 2005October 11 and 31, 2005Rapu‐rapu Island, AlbayIt rained heavily. Water elevation at the lower tailings storage facility was almost full due to continuous rainfall. almost full due to continuous rainfallIMPACTS:In the morning of November 1, 2005, fishes and other marine organisms gwere found dead at Ungay and Hollowstone Creeks As per DENR investigation report: 1. The effluent Lafayette to meet DENR 1 The effluent Lafayette to meet DENREffluent Standards per DENR Administrative Order 90‐35 for parameter cyanide; and2. Samplings conducted on 4 and 5 2 S li d t d 4 d5Nov. at Hollowstone Creek, Ungay Creek and Binosawan River failed to conform to conform to DENR Administrative Order 90‐35 for parameter cyanide.parameter cyanide
DIZON COPPER SILVER MINES INC. (DCSMI) Heavily‐rusted mine facilities at the August 27 and September 11, Benguet Corporation‐Dizon Copper/Gold Mines (BCD) in San 20022002 Marcelino, Zambales.San Marcelino, Zambales [Photo courtesy of Tetra Tech EM Inc.]The Spillway of Bayarong tailings dam collapsed during tailings dam collapsed duringheavy rain; IMPACTS:Low lying villages were flooded with mine waste; 250 families evacuated;Some tailings spilledinto Mapanuepe Lakeand eventually into theSto. Tomas River;dams heavily damaged(especially Camalca) Communities residing In Dizon mine road.
SIPALAY, NEGROS OCCIDENTAL DISASTERS In November 8, 1982 under MARICALUM MINING CORP, a tailings pond causing the Wid di d i Widespread inundation of f agricultural land up to 1.5m High and the siltation of the Tao‐angan River Again in December 8, 1995 Under PHILEX MINING CORP, Destruction of tailings pond Caused the siltation of C d th ilt ti f Sipalay River.MARICALUM MINING CORP. December 2001 Since the ‘temporary’ stoppage of operations no fresh tailings have been discharged, causing tailings pond 3 to dry up and become prone to wind actions IMPACTSIMPACTS:Excessive levels of dust affect area of 5 km; air quality affected; nearby residents report increases in respiratory illnesses
ATLAS CONSOLIDATED MINING AND DEVELOPMENT CORP. DEVELOPMENT CORP.(ACMDC) August 9, 1999 Toledo City, Cebu Outlet in drainage tunnel of released approximately 5.7 million m3 of acidicthe open pit (from closed water into Sapangdaku and into the open seacopper mine) was clogged copper mine) was cloggedresulting in loosening of accumulated silt, causing discharge into the Sapangdaku River towards the seaIMPACTS:IMPACTSSiltation of Sapangdaku River; Increase in acidity of affected water bodies causing fish kill water bodies causing fish kill
PLACER, SURIGAO DEL NORTE DISASTERS All under MANILA MINING CORP. (MMC)• July 9, 1987: Dam failure causing fish kills• September 2, 1995: Dam foundation failure at tailings pond 5 of the Placer copper‐gold project killing 5 people and coastal pollution• April 26, 1999: Tailings spill from damaged concrete pipe in tailings pond caused 40 homes to be buried and 40 hectares of land affected including 20 hectares of agricultural land
DISASTERS IN SIBUTAD, ZAMBOANGA DEL NORTEUNDER PHILEX GOLDUNDER PHILEX GOLD PHILIPPINES INC. (PHILEXMINING CORP.) Two incidents of heavy rain Two incidents of heavy rainresulted in mudflow and rockslide into silt dam at Lalab (November 6, 1997) causing flashfloods damaged nearby fl hfl d d d bhouses and rice fields and the overflowing of silt dam at the Sibutad gold project (in June g p j (27, 1998) causing fish kill and blindness.
According to the Save The Abra River Movement, the siltation and toxic pollution of M t th ilt ti dt i ll ti f the rivers deprives communities in Cervantes of about 7.33 million kg of rice worth US$2.27 million per annum. p BENGUET DISASTERSOctober 17, 1986, Mankayan, Benguet (Lepanto Consolidated Mining Corporation): October 17, 1986, Mankayan, Benguet (Lepanto Consolidated Mining Corporation):Collapse of tailings pond 3 due to weakened dam embankment caused by additional loading caused the siltation of the Abra River which affected 9 municipalities
January 1992, Padcal, Tuba, Benguet (Philex Mining Corp.): Collapse of dam wall at tailings pond 2 due to weakened foundation caused by the 1990 Northern Luzon earthquake effected the heavy siltation affected downstream government irrigation system BENGUET DISASTERS
BENGUET DISASTERSJune 26, 1993, Mankayan, Benguet (Itogon‐Suyoc Mines Inc): Overtopping at the dam June 26 1993 Mankayan Benguet (Itogon Suyoc Mines Inc): Overtopping at the damof the Itogon‐Suyoc gold and silver mines occurred during a typhoon when the dam’s penstock and diversion tunnel were blocked caused the siltation of adjoining river
THE WORST MINING DISASTER: MARINDUQUE EXPERIENCE MARINDUQUE EXPERIENCE FillFille
December 6, 1993, Marinduque Island MARCOPPER MINING CORP The Maguila‐Guila siltation dam collapsed due to pressure from heavy siltation at the dam wall and caused the Mogpog River to be flooded; 2 children killed; Ri b fl d d 2 hild kill d livestock killed; agricultural land contaminated; downstream communities and Mogpog Town flooded. and Mogpog Town flooded
March 24, 1996, Marinduque Island MARCOPPER MINING CORP According to the company the rock around a cement plug rock around a cement plug inserted into the former Tapian open Pit drainage tunnel to convert it into a tunnel to convert it into a tailings containment was fractured and the plug failed. However, the tunnel started H th t l t t d leaking in August 1995. In September 1995 Marcopper/Placer Dome / l started drilling down 160 meters to the tunnel. On 24 March 1996 the drill hit the tunnel, released an air pocket holding back tailings and
THE WORST MINING DISASTER: MARINDUQUE EXPERIENCE MARINDUQUE EXPERIENCE Bags of mine waste tailings decomposing in FillFille the Boac River in March 2004 (Oxfam)
WHAT MINERS Acid mine drainage or acid rock drainage, is the acidic water that drains out of above-ground orCANNOT SOLVE: under-ground coal and metal mines. It may form g y inside the mine or several kilometers downstream.Acid Mine Drainage It can occur during mining operations and even when operations has finished and the site is abandoned. It affects stream and river ecosystems by increasing acidity, acidity depleting oxygen, and releasing heavy oxygen metals, such as aluminum, iron, manganese, and zinc.
Photos and data were taken from the following sources: f ll• ATM File Photos• Oxfam Ombudsman Report on Marinduque• Legal Rights and Natural Resources Center (LRC)• Philippine Indigenous Peoples Links (Piplinks)• Marinduque Council for Environmental Concerns (MACEC)• Alex Felipe Photos• www.saverapurapu.blogspot.com www saverapurapu blogspot com• www.panoramio.com• www.mustardseedblog.com www mustardseedblog com