Hitachi Construction Machinery


Ecosystem Preservation Activities


HCM promotes environmentally-friendly activities in many fields both inside and outside the business. We would like to introduce examples in our production locations.


Hitachi Construction Machinery Tierra Co., Ltd created an ecosystem map of our factory site. Since then, we have been updating this map. We use the map to familiarize our employees with the animals we identified in the area. Recently, we observed a Japanese wild rabbit (lepus brachyurus). In the waterfront area we identified other species endemic to the area, including freshwater prawns (palaemon paucidens), Japanese crayfish (cambaroides japonicas) and Japanese ricefish (Oryzias latipes).

Furthermore, we planted vegetation in an embankment made from topsoil when we carried out construction to expand our parking lot. We also embarked on the development of a biotope. Along 700m² of the embankment, we planted around 30 trees, including bayberries (myrica rubra), trees that attract stag beetles (lucanidae) and rhinoceros beetles (dynastinae), and other trees that produce nectar that is a source of food for the Japanese white-eye (zosterops japonicus), a small bird, and Japanese bush warbler (horornis diphone). In 10-20 years down the road, the trees we plant should grow into a forest.



Kasumigaura Seiryusen (clear spring water pond)

Domestic wastewater from Hitachi Construction Machinery’s Kasumigaura Works is treated and turned into clean water, after which it is released into rice field irrigation ditches.
In April 2012, the clear spring water activities emerged out of a single comment from the general manager of the Component Product Dept. which was “I want to see if fish can live in this clean water.”

Employees were asked to submit names for the small pond. The name Kasumigaura Seiryusen (clear spring water pond) was chosen. Goldfish and the Japanese rice fish (medaka), which live in the pond, had babies, giving birth to a whole new ecosystem. During break time, some employees come to look at the spring and see how the fish are doing.

01Kasumigaura Seiryusen (clear spring water pond)

05A baby goldfish born last year

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