Business Philosophy

We introduce the business philosophy of Mitsui Mining & Smelting Co., Ltd.

Environmental policy
Occupational Safety and Health Policy
In Regulations

Environmental policy

The Thin Film Materials Division of Mitsui Mining & Smelting Co., Ltd. strives to protect the local environment and prevent pollution, and aims to promote the sputtering target business.

We will evaluate the impact of our business activities on the environment, set environmental objectives and goals, and continually maintain and improve them in order to prevent environmental pollution.
We will comply with environmental laws and regulations and other requirements to which we agree.
We strive to reduce the negative impact of our business activities on the environment.
We will regularly conduct internal environmental audits to check the implementation status of our environmental management system, and take corrective and preventive measures based on the results to strive for maintenance and improvement.
We will ensure that all employees working in this division are aware of this policy and strive to implement and achieve it.
This environmental policy will be reviewed and revised periodically to reflect changing circumstances and information.
This policy will be made public.

Publication date October 18, 2012 General Manager, Thin Film Materials Division, Mitsui Mining & Smelting Co., Ltd.

Occupational Safety and Health Policy

Our division aims to contribute to society by playing a part in industrial development through the manufacture of sputtering targets, while also working to ensure the safety and health of our employees by carrying out activities that take into consideration occupational safety and health in our business activities.

We will comply with laws and regulations related to occupational safety and health, as well as other requirements to which our division agrees, and will continually work to improve occupational safety and health, and strive to prevent accidents and illnesses.
We will implement occupational safety and health management with the cooperation of our employees.
We will set and work on occupational safety and health targets, taking into consideration occupational safety and health.
We will conduct internal occupational health and safety audits and strive to maintain and improve occupational health and safety management.
We will implement occupational safety and health education and public relations activities within the division to improve the understanding and awareness of occupational safety and health among all division employees.
We aim to improve the level of risk assessment and risk identification by promoting KY activities.
We provide health and safety support to our division's overseas bases (Taiwan Special, MKK).
This occupational safety and health policy will be reviewed regularly.

We also ask for the understanding and cooperation of our partner companies in accordance with this policy.

Publication date: December 15, 2014 General Manager, Thin Film Materials Division, Mitsui Mining & Smelting Co., Ltd.

In Regulations

ITO sputtering target that meets health and safety standards

For the health of workers

The members of the Japan Metals Association are committed to preventing health hazards for manufacturing workers. We provide safe and reliable ITO sputtering targets.
Indium compounds are subject to labeling under the Industrial Safety and Health Act, and are classified as Class 2 substances and specific controlled substances under the Specific Chemical Substances Control Act.
Work that does not involve risk of exposing workers to dust or other particles of indium compounds does not qualify as handling work and is therefore not subject to the regulations.

Target manufacturers who are members of the Japan New Metals Association comply with the strict regulations on indium enacted by the Japanese government.

1. Legal and regulatory information

In January 2013, the Japanese government became the first in the world to designate indium as a substance subject to legal restrictions. [Specified Chemical Substances (Occupational Safety and Health Act)]

2. Health hazard information

The reason for designating it as a target of legal regulation is that the Japanese government has confirmed cases of health problems caused by indium compounds, which are the raw materials for ITO, IGZO, etc.

3. Information on preventing health problems

In order to prevent these reported health problems, it is necessary to manage workers' work environments, including wearing masks appropriate to the work environment and undergoing health checks.


Work environment measurement results	Respiratory protection equipment to be selected (the following or equivalent)
300μg/ ^m3 or more	Full face pressure demand type breathing apparatus Full-face type compressed oxygen positive pressure respirator
30μg/ ^m3 or more	Full-face type electric fan-equipped respirator (particle filter efficiency: 99.97% or more) (It has been confirmed that the leakage rate according to the JIS standard is Class S and that the protection factor for each worker is 1,000 or more) Full face pressure demand type airline mask
15μg/ ^m3 or more	Full-face respirator with electric fan (particle collection efficiency: 99.97% or higher) Full-face type electric fan-equipped respiratory protective equipment (with a leakage rate of S class according to the JIS standard and a protection factor of 1,000 or more for each worker) Full face, fixed volume airline mask
7.5μg/ ^m3 or more	Half-face type respirator with electric fan (particle collection efficiency: 99.97% or more) Full-face dust mask (particle collection efficiency: 99.9% or more)
3μg/ ^m3 or more	Hood-type or face shield-type respiratory protective equipment with an electric fan (particle collection efficiency of 99.97% or more)
0.3μg/ ^m3 or more	Half-face type replaceable dust mask (particle collection efficiency: 99.9% or more)
Less than 0.3 μg/ ^m3	No set date

4. Measures taken by New Metals Association member companies

The member companies of the Japan Metals Association are implementing work environment management and work management that comply with the strict regulations mentioned above, and are making progress in improving the work environment. Here are some examples of these measures:


① Measures to prevent emission	The following measures are taken to prevent workers from being exposed to dust, fumes, etc. Emission control measures in indoor workplaces. Performance requirements, inspection, notification, etc. for local exhaust measures and push-pull type ventilation equipment. Installation of dust removal equipment.
②Work environment measurement	We have a nationally qualified occupational environment measurement specialist conduct work environment measurements on a regular basis, once every six months, and make appropriate improvements based on the evaluation results.
③Health Check-up	For workers who are constantly engaged in manufacturing and handling operations, regular health checkups are conducted once every six months for specified items (measurement of serum indium levels, serum KL-6 levels).
④ Wear respiratory protective equipment	Depending on the results of work environment measurements, we use respiratory protective equipment that meets the standards set by the Minister of Health, Labour and Welfare.
⑤Other measures	Posting various precautions in the workplace Keeping records of work Removing adhesions Cleaning the work area floors etc. by washing them with water (daily)